问题
选择题
多项式-4x3y2+2x2y-8xy2因式分解后得( )
A.-2(2x3y2-x2y+4xy2)
B.-2xy(2x2y-x+4y)
C.xy(-4x2y+2x+8y)
D.2xy(-2x2y+x-4y)
答案
-4x3y2+2x2y-8xy2,
=-2xy(2x2y-x+4y),
故选:B.
多项式-4x3y2+2x2y-8xy2因式分解后得( )
A.-2(2x3y2-x2y+4xy2)
B.-2xy(2x2y-x+4y)
C.xy(-4x2y+2x+8y)
D.2xy(-2x2y+x-4y)
-4x3y2+2x2y-8xy2,
=-2xy(2x2y-x+4y),
故选:B.