x^2-y^2-（x+y）^2

来源：学生作业帮助网编辑：六六作业网时间：2025/02/02 07:59:17

x^2-y^2-（x+y）^2x^2-y^2-（x+y）^2x^2-y^2-（x+y）^2=x^2-y^2-x^2-y^2-2xy=-2xyx²-y²-(x+y)²=x&

x^2-y^2-（x+y）^2
x^2-y^2-（x+y）^2

x^2-y^2-（x+y）^2
=x^2-y^2-x^2-y^2-2xy=-2xy

x²-y²-(x+y)²
=x²-y²-x²-2xy-y²
=-2y²-2xy
=-2y(y+x)

(x+y)(x-y)-(x+y)^2
=(x+y)(x-y-x-y)
=-2y(x+y)

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 （x-y)(x-y)2(y-x) (x+2y-?）(x-2y+?) 化简y(x+y)+(x+y)(x-y)-x^2 （x-2y）(x+y)+（x+y）计算计算：（x-y）^2-(x+y)(x-y) 2（x-y）²-3(x-y)(-y-x) (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) （x-y／x+2y）³ 因式分解x(x+y)(x-y)-x(x+y)^2 [(x-y)^2-(x+2y)(x-2y)]/y 计算:y-x分之x+y+x-y分之y-y-x分之2x-y 求因式分解(x-y)²-2(x-y)³和（x+y）（x-y）-x（x-y）化简 (x+2)平方-（x-y）(y-x)是(x+y)平方-（x-y）(y-x) x根号x+x根号y/xy-y^2)-（x+根号xy+y/x根号x-y根号）y [(x+2y)²-(x+y)(x-y)-7y²】÷（2y）｛（x²+y²）-（x-y）+2y（x-y）｝/4y x^2(x-y)+(y-x)