(3x^1/6y^5/6)除以(-2x)^2/3y^1/6*(4x^1/2y^1/3)
化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简求值【(3x+4Y)的2次方-3x(3x+4y)】除以(-6y),其中x=1,y=-3
化简求值:(x+y)-(2x+1/2y)-(3x+1/6y)-(4x+1/12y)-(5x+1/20y)-.(10x+1
先化简,再求值:[(X+2Y)平方-(X+Y)(3X-Y)-5Y平方]除以(2X)其中X=-2,Y=1/2
3x+2y/4=2x+y/5=x-y+1/6
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x
(3x^1/6y^5/6)除以(-2x)^2/3y^1/6*(4x^1/2y^1/3)
分式的加减:[(x/y-y/x)除以(x+y)+x(1/y-1/x)]除以1+x/y,其中x=5,y=2
(x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3)