[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]÷4x.
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
(X-3Y)(X+3Y)-(X+2Y)(X-4Y)-(2X-Y)2的平方
(3x-y)²-2x(4x-5y)-(x+2y)²
((x+2y)x^2+(x-y)(3x-y)-5y^2)÷2x
(x-y)(x-2y)-(3x-2y)(x-3y)
计算:(3x-y)2-(2x+y)2+5x(y-x)
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
计算:(x-4y)(2x+3y)-(x+2y)(x-y).
5/12[-4/3(x-y)^3] *(x+y)^2 * (-x-y)^3 * 5/6(y-x)^2
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
计算 1.(-2x)^3-3x乘(x-2x^2) 2.【(x+2y)^2-(x-2y)(x+2y)】÷4y