∵左边=10a2(y-x)2-5a(y-x)3,
=5a(y-x)2[2a-(y-x)],
=5a(y-x)2(2a-y+x),
=5a(x-y)2(2a+x-y),
∴M=5a(x-y)2,
故选A.
10a2(x-y)2-5a(y-x)3=M(2a+x-y)中,M(M为整式)等于( ) A.5a(x-y)2 B.5a(x-y) C.a(x-y) D.x-y
10a2(x-y)2-5a(y-x)3=M(2a+x-y)中,M(M为整式)等于( )
A. 5a(x-y)2
B. 5a(x-y)
C. a(x-y)
D. x-y
A. 5a(x-y)2
B. 5a(x-y)
C. a(x-y)
D. x-y
数学人气:819 ℃时间:2020-06-25 13:50:25
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