因式分解x2y(x-y)2-2xy(y-x)3的结果为______.
题型:填空题难度:一般来源:不详
因式分解x2y(x-y)2-2xy(y-x)3的结果为______. |
答案
x2y(x-y)2-2xy(y-x)3, =x2y(x-y)2+2xy(x-y)3, =xy(x-y)2[x+2(x-y)], =xy(x-y)2(3x-2y). |
举一反三
若x2+ax+b=(x+5)(x-2),则a=______,b=______. |
已知x2+x-1=0,则代数式x3+2x2+2010的值为______. |
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