锛坸-2y)虏锛坸虏+4y虏锛壜诧纸x+2y锛壜 具体算式
化简算式(4x-2y²)-[5x-(x-y²)]-x
{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y
x^2-y^2/x+y-4x(x-y)+y^2/2x-y,
x+2y+4y^2/x-y+4x^y/4y^2-x^2
(2x-y)^2-4(x-y)(x+2y)
(2x-y)²-4(x-y)(x+2y)
化简:(2x-y)²-4(x-y)(x+y)
x+2y+4x^2y/4y^2+4y^2/x-2y
4x(y-x)-y^2因式分解
(x+3y-4)(2x-y)
求函数的微分:y= arctan(1-x^2)/1+x^2 具体算式与答案
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)