计算：(x-3y)(5x-2y)还有（2a-3)(4a-4)

计算：x(x-3y)(5x-2y)还有（x^2-3)(x^2+5) x(x-3y)乘y 计算：(x-3y)(5x-2y)还有（2a-3)(4a-4) 计算：x(x-3y)(5x-2y) 计算:(x+3y)(2x-y) 计算:(2x-3y)(x+y) 计算:(-x-2y) * (3x-y) 计算：(x+y)-3(x-2y). 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 计算(x+y)(x+y)^2(-x-y)^3 3x(x-y)+2y(x-y) 计算 计算：x+2y/x-y+2x/y-x-3y/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-(x-5y)-(-3x+2y) 计算:y×(y/x)^3÷[-(x^2)/y]^-2 计算：y(x-y)^2+(y-x)^3=? 计算(x+y-3)(x-y+3)还有（x－2y＋3z）^2 计算：(x-5y)^2 计算（2x-3y)(x+4y)-(3x+y)(x-2y)（2x-3y)(x+4y)-(3x+y)(x-2y)