计算:(x-2y)²×(2y-x)³

计算(x²/x+2y)-x+2y-2 (x-y)·2(x-y)²·3(x-y)³ 计算 计算4（x+y）^5（x-y）^4÷[2（x+y）³*（y-x）²] 计算:(-x-2y) * (3x-y) 计算:(x-y)^2*(y-x)^2*(x-y)^6 计算(x+y)(x+y)^2(-x-y)^3 计算3x[xy-2x(1/y-x/3]+3y(x²-y²) 有这样一道题:"计算(2*x*x*x-3*x*x*y-2*x*y*y)-(x*x*x-2*x*y*y+y*y*y)+【- 计算x²y³-2x(4xy³) 计算(-X)²•X³•(-2y)³ 计算6x³y^6÷(1/2)y³÷(-3x²y)-(12x^4y^6-8x²y^ 计算(x-2y-1)(x-2y+1)-(x-2y-1)²