(x+2y)(3x+4y)
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
(X-3Y)(X+3Y)-(X+2Y)(X-4Y)-(2X-Y)2的平方
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
(3x-y)²-2x(4x-5y)-(x+2y)²
(x-y)(x-2y)-(3x-2y)(x-3y)
(x-2y)²+(2x-4y)(x+y)+(x+y)²
计算:(x-4y)(2x+3y)-(x+2y)(x-y).
因式分解(X+2Y)(3X-7Y)平方-4(X+2Y)(X+Y)平方
5/12[-4/3(x-y)^3] *(x+y)^2 * (-x-y)^3 * 5/6(y-x)^2
(x+2y)(3x^2+4y^2)-(x+2y)^2(x+2y) )
化简,亲快啊啊急!(3x-2y)(7x-y)-(4x+3y)(x-y)
(x-4y)分之(3x)+(4y-x)分之(x+y)-(x-4y)分之(7y)