1/x²×x³+x的7次方÷x² 2/、【（x-y)²+（x+y)(x-y)]÷

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1/x²×x³+x的7次方÷x² 2/、【（x-y)²+（x+y)(x-y)]÷2x 因式分解,

x^2*x^3+x^7÷x²
=x^5+x^5
=2x^5
、【（x-y)²+（x+y)(x-y)]÷2x
=(x-y)(x-y+x+y)÷2x
=(x-y)*2x÷2x
=x-y

1/x²×x³+x的7次方÷x² 2/、【（x-y)²+（x+y)(x-y)]÷ 因式分解x的5次方y-x³y+2x²y-xy 8(x+y)的八次方(x-y)的七次方÷[2(x＋y)³(x-y)³]² 因式分解：x的5次方-2x³y²+x*y的4次方计算:(1)(-x²/y)·(-y²/x)³÷(-y/x）的4次方；【(1)/(x-y)+(1)/(x-y)】÷(2x)/(x²-2xy+y²) (x-y)的四次方(x-y)-2(x-y)²(y-x）³等于? 计算 [12(x+y)³(y-x)]³÷[4(x+y)²（x-y)]² 化简x-y分之x + x³-2x²y+xy²分之y³ ÷ y²-x&# 先化简,再求值：（3x²y-2）×y-（9x的4次方y³-15x²y²）÷（3x 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值因式分解:x²(x-y)+(y-x)