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(2009•邵阳)下列运算正确的是A.-22+(π-3.14)=5B.C.x2•x3=x5...
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(2009•邵阳)下列运算正确的是( )
A.-2
2+(π-3.14)=5
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
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l+uBC/rMZbjDw50HOLc6gb8bYQGJcCRc5SQvb80eoibnM/VBRmPLE22PhCHSCoubiA5LuHKuYcFc
kEJN2009sKz7G32nSBqt8X2EY3IqeRNzB0zmtlIkJVeJHKlHf26JcJbtZ1j0KJ/sJvfSMT6yUviK
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ELlqRIyUSc+T6izJ+qihWpL0G5vHVeM39Bxq8RIRKXqJiET8Ad6j0aGhCF7QAAAAAElFTkSuQmCC
)
C.x
2•x
3=x
5D.ab
2+a
2b=a
3b
3
相关试题
-
(2009•邵阳)下列运算正确的是( )
A.-22+(π-3.14)=5
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2•x3=x5
D.ab2+a2b=a3b3
-
(2009•邵阳)下列运算正确的是( )
A.-22+(π-3.14)=5
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAJ6SURBVGhD7VmJkcMgDKQy90Q7boZSKIXjM0Y8
QgHhuWScmUxyMaDV6kUnzPvyDIiXh8DAS0T0hD4R+jSHEEa4t1Tf4zhKBszufZxGZ8iVjL9fz+3n
pVqHCGVkOsR+zzb8a0ac8ZLRAu5kRPvsBPbU5jwOc0am2kRoXTHJ6hS51RgP1koB3Po8bq8odDKO
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DOSLAnERFjQi7CoQaywsOIvsrEjufGmDsP0qw4JMhCHmiVZ5SqWsZflN3qbkXQ1qKuqwqIloKhys
l+uBC/rMZbjDw50HOLc6gb8bYQGJcCRc5SQvb80eoibnM/VBRmPLE22PhCHSCoubiA5LuHKuYcFc
kEJN2009sKz7G32nSBqt8X2EY3IqeRNzB0zmtlIkJVeJHKlHf26JcJbtZ1j0KJ/sJvfSMT6yUviK
UFxO6JIZcwVd6JaVotUjYDEJUQQidjRbo7yQP78wfbKn3N8kgk75PiLoGHhWvqEReYzJcjZ7LyRa
HkOyndIvn8ikJ0mfKJ9syKkH5ZM2pO8J84iyDGKTngSg3wxRMe5fB3MYdnm8BzNZGUUnPYG56v6x
X6kZCUX367283ffACVXvDl+EwHQnOqPL4h5//4h9EoZ7PKqzQL5J8Zq3e/aBXSPGRGCTnkVrPbPd
EiHtVdwPgvrVcUAEPul5RpEVKTChh2s6JUcUMjkHMCvqTO/11TD3gv7ooOsRw0nPNLonN4Z/8qS7
ELlqRIyUSc+T6izJ+qihWpL0G5vHVeM39Bxq8RIRKXqJiET8Ad6j0aGhCF7QAAAAAElFTkSuQmCC
)
C.x2•x3=x5
D.ab2+a2b=a3b3
-
(2009•邵阳)下列运算正确的是( )
A.-22+(π-3.14)=5
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2•x3=x5
D.ab2+a2b=a3b3
-
下列运算正确的是( )
A.-22+(π-3.14)=5
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAAAjCAYAAAAg/NwXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
C.x2•x3=x5
D.ab2+a2b=a3b3
-
下列运算,结果正确的是( )
A.a2+a3=a5
B.2(a2b)÷(ab)=2a
C.(a+b)2=a2+b2
D.(3ab2)2=6a2b4
-
(2009•莆田)下列各式运算正确的是( )
A.a2÷a2=a
B.(ab2)2=a2b4
C.a2•a4=a8
D.5ab-5b=a
-
(2009•湘西州)在下列运算中,计算正确的是( )
A.a3•a2=a6
B.(a2)3=a5
C.a8÷a2=a4
D.(ab2)2=a2b4
-
(2006•巴中)下列运算正确的是( )
A.3x2+2x3=5x5
B.x3•x3=x6
C.(x2)3=x5
D.(x+y2)2=x2+y4
-
下列运算正确的是( )
A.2a3+5a2=7a5
B.3
-
=3
C.(-x2)•(-x3)=-x5
D.(
m-n)(-
m-n)=n2-
m2
-
下列运算正确的是( )
A.2a3+5a2=7a5
B.3
-
=3
C.(-x2)•(-x3)=-x5
D.(
m-n)(-
m-n)=n2-
m2