(x^2-y^2)^2-18(x^2-y^2)+72因式分解
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(x^2-y^2)^2-18(x^2-y^2)+72因式分解(x^2-y^2)^2-18(x^2-y^2)+72因式分解(x^2-y^2)^2-18(x^2-y^2)+72因式分解(x^2-y^2)^
(x^2-y^2)^2-18(x^2-y^2)+72因式分解
(x^2-y^2)^2-18(x^2-y^2)+72因式分解
(x^2-y^2)^2-18(x^2-y^2)+72因式分解
(x^2-y^2)^2-18(x^2-y^2)+72
=（x²－y²－12）（x²－y²－6）
十字相乘
x²－y² ﹣12
×
x²－y² ﹣6
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简y(x+y)+(x+y)(x-y)-x^2
(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)
因式分解x(x+y)(x-y)-x(x+y)^2
(x+y)^2-9(x+y)+18
[(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
x^2(x-y)+(y-x)
x(x-y)2-(y-x)3
【(x-y)^2+(x+y)(x-y)】除以 2x
[(x-y)²+(x+y)(x-y)]除以2x
化简：[(x+y)(x-y)(x+y)^2-2y(x-2y)](-2y) 谢谢!
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
计算：[(x+y)(x-y)-(x-y)^2+2y(x-y)]/(-2y)
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y