分解因式:xy2-2xy+2y-4=______.
题型:填空题难度:一般来源:潍坊
分解因式:xy2-2xy+2y-4=______. |
答案
xy2-2xy+2y-4, =xy(y-2)+2(y-2), =(xy+2)(y-2). |
举一反三
分解因式9ax2+9bx2-a-b=______. |
下列各式分解因式中,正确的是( )A.1-x2=(x+2)(x-2) | B.(x-y)3-(y-x)=(x-y)(x-y+1)(x-y-1) | C.4x-2x2-2=-2(x-1)2 | D.x2-y2-x+y=(x+y)(x-y-1) |
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