计算【4(x+y)²-x-y】÷(x+y)
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
用行列式性质计算(需过程):(x,y,x+y; y,x+y,x; x+y,x,y )
(xy-x²)²÷(x-y)²/xy·x-y/x² 计算
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;
计算 1.(-2x)^3-3x乘(x-2x^2) 2.【(x+2y)^2-(x-2y)(x+2y)】÷4y
计算:(x+2y)(3x-5y)-(6x的四次方y²-2x²y²)÷(2x²y&
计算:(1)2/(x+y)+4y/x²-y²(2)x²/x+y-x+y
计算:(4y分之3x²)² × 3x分之2y + 2y²分之x² ÷ x分之2y
2.(x+y)²(x-y)²-(x-y)(x+y)(x²+y²)
计算(x^2-y^2)÷(x分之x-y + y^2分之x^2-y^2 - x-y分之x+y)