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(2000•福建)下列各式中计算正确的是A.a10÷a5=a2B.(x+y)2=x2+y2...
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(2000•福建)下列各式中计算正确的是( )
A.a
10÷a
5=a
2B.(x+y)
2=x
2+y
2C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
相关试题
-
(2000•福建)下列各式中计算正确的是( )
A.a10÷a5=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
(2000•福建)下列各式中计算正确的是( )
A.a10÷a5=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
(2000•福建)下列各式中计算正确的是( )
A.a10÷a5=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAIlSURBVGhD7ZkNDoMgDIU5GXfiOlyGo3gU1oL4
s+EspTVqWGKWZSDy8fqE1sTx+SFgBpNfAgNKRRXyUCYfrbHRT8/VoCyU4KIxBq4B5UsSIbpXQSkr
bX3M6scJwsovvykh8TYoac5T9Bblj5NzgCV/gsOwOLhcaVVA3iB8Oryt6imTtwBgBULRx9rmBkrp
9La60SLlppDZYrsBlCX0eYqtQgmgFP5r9YVQMHTQItBDklWAFHeWcRpLL4JSjNSWXVeJyxYiydxW
M27pesq6uQF/cWQ3b80PrtlhQKnQHVAGlNOg6/Q22KT+2akK/7edTMu4pxCEG7zYaPmkBpQKuwHl
TlA4ntLSh9sWGSkpBdMPxcC5p22+J/T2VIEyebfkaNPxgX3i7p0er78KlN2jpD3Ds9SiDyWlNIWh
dGTVKNrRhwITcJL1DkpWrTndsUelDiX4kgSnrBG1zclh785QSsKKOlV6OwaUhkrFqhThOEUgS8IK
fMVLhlDyqX3+9W+1YfG0eqXiezEyFEqc0pexUg7hJZCPh2QoZb4ZpVKx8RR+UqaBl1BTPpRIqFR0
QcnUzRIm123U+FAolYouKGnZZ/I42HWJah4UaqXiLxRaqTSfc1ZTFYqQo9swsmqtlYp+pSSfnmtE
yjyuur0AFHjdQkHeXBc76my6oQQH55ri6PDtg/ozqw+QoTDitLx5skDm/MnDUgRHdNXPPurLqjDA
gFKBOqBUoHwAJF6ewC+zuUsAAAAASUVORK5CYII=
)
D.
-
(2000•福建)下列各式中计算正确的是( )
A.a10÷a5=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
下列计算中,正确的是( )
A.a10÷a5=a2
B.3a-2a=a
C.a3-a3=1
D.(a2)3=a5
-
(2005•淮安)下列计算中,正确的是( )
A.a10÷a5=a2
B.3a-2a=a
C.a3-a3=1
D.(a2)3=a5
-
(2003•福州)下列运算中正确的是( )
A.a10÷a5=a2
B.(a3)4=a7
C.(x-y)2=x2-y2
D.4a3•(-3a3)=-12a6
-
下列各式计算正确的是( )
A.a12÷a6=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
下列各式计算正确的是( )
A.a12÷a6=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.
-
下列各式计算正确的是( )
A.a12÷a6=a2
B.(x+y)2=x2+y2
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEUAAAAqCAYAAADlL5amAAAAAXNSR0IArs4c6QAAAARnQU1BAACx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)
D.