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{x-y+(4xy/x-y)}{x+y-(4xy/x+y)}怎么解?
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
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x-y/xy-y^2计算
x^2y+4xy+4y
计算[4/(x^2-y^2)+(x+y)/(xy^2-x^2y)]除[(x+2y)(x-y)/(x^2+2xy^2)
计算4xy+(x-2y)的平方+(x+3y)(3y-x)
计算:(x-2y)(1+x+2y+4y^2+2xy+x^2)
分解因式计算6x³y(x-y)³-4xy³(y-x)²