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(2005•宁波)一元二次方程x2+2x-5=0的两个根的倒数和等于A.B.-C.D.-
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(2005•宁波)一元二次方程x
2+2x-5=0的两个根的倒数和等于( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
相关试题
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(2005•宁波)一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
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)
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
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AAAASUVORK5CYII=
)
D.-
-
(2005•宁波)一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
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)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
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0Pz+KwAAAABJRU5ErkJggg==
)
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
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AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
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jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
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AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-
-
一元二次方程x2+2x-5=0的两个根的倒数和等于( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
B.-![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAADCSURBVDhPvVLbEcMgDPNk7OR1WMajMIqKecUG
Cv3INXf5IBGSbIlweeglgDCIqL4hIhlaQooILO2TgBU0zgAlEXcjxeBYVpMqZxnmKYQJ5j88g/NT
rxpAQgyMbrczD4BwQLTzNUQBqHOri2y0n0lNjSX1ZdEj9VYWh0jvEqvBx/S0qL3OXeLnypUebFrV
JHKTpqr5sMzuZ8nMoDH30Q5x680anI99GbOYPXUy8zjDm0VlwLnVswdt8miSr/y/w/qW6gfMluX4
0Pz+KwAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAjCAYAAACpZEt+AAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC9SURBVDhPvVPbDcQwCGMydmKdLMMoGYWDvA7S
NPmJWimqFLm2wS7I4YF7gJxQAKAeTJIbdZNgIXfpZSuASYjXbhSQJWGjBpIZF6ZgMiBK6gaU9DFm
Mev0FnuIhteAHQPT7CEnwb4gfc/jXsziLdWzxEjQGe13xnpmuNQo7cOqTdWDbXKsT4Mysz6LzDz6
Z1+UuJ+ddFZNbp9mDCzuIfiprA5g5d2Udi5Kd1UYzHkoivtPoFZ9Pn+pz8LaZP4D24Hl+DyU7CsA
AAAASUVORK5CYII=
)
D.-