计算(16x^2y^4+8x^4y^2-2x^2y^2)除(-4x^2y^2)

计算(x+2y)(x-2y)(x^4-8x^2y^2+16y^4) 计算 (x^8+y^8)(x^4+y^4)(x^2+y^2)(x+y)(x-y) 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) 计算:2xy/(x+y)².(x+y)/4y 计算:1/(x-y)-1/(x+y)-2y/(x^2+y^2)-4y^3/(x^4+y^4)-8x^7/(x^8+y^8) 计算：(8y^2/x-2y)+(x^2/2y-x)-(4y^2/x-2y) 计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y) (x-3y)(y+2x)-(4y-3x)(3x+4y)计算 计算:(x-y)^2*(x+y)^3*(-x-y)^3*(y-x)^4 计算：[（x+y）³-2(x+y)²-4(x+y)]÷（x+y) 计算[(x+y)的立方-2(x+y)的平方-4(x+y)]÷(-x-y) 计算:16(2x+y)^3÷(-4x-2y)^2·(2x-y) 计算：8x^2y^4(-3x/4y^2)/(-x^2y/2) 计算：(x-y)^8÷(y-x)^4×(x-y) [(x+2y)(x-2y)+4(x-y)^2-6x]/(6x)计算 分式计算(x-y-4y^2/x-y)(x+y-4x^2/x+y)=? 计算:(4xy(x-y)^-1+(x(y^-1)-(x^-1)y)/((x^-1)+(y^-1)))*(x+y)^-2 计算：[(4x^2-1/2y)^2+4y(x^2-1/16y)]÷(-8x^2)