计算（2x-3y)²-（4y-3x)(4y+3x) (x+3)²-2(x+5)(x+1)+(x-2)

计算（2x-3y)²-（4y-3x)(4y+3x) (x+3)²-2(x+5)(x+1)+(x-2) 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3x[xy-2x(1/y-x/3]+3y(x²-y²) (x-3y)(y+2x)-(4y-3x)(3x+4y)计算 计算【3(x-y)^2(x+y)^-2/4(x+y)^2(x-y)^-2】^-2 计算（2x-3y)(x+4y)-(3x+y)(x-2y) 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(x+y)(x+y)^2(-x-y)^3 计算:(-x-2y) * (3x-y) （x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3) 分解因式计算:x^2(x-y)+(y-x)=?x^3+x^2+1\4x=?(2x+y)^2-(x-2y)^2=? 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