(x-5x)^2-(x+5y)^2

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(x-5x)^2-(x+5y)^2
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(x-5x)^2-(x+5y)^2
(x-5x)^2-(x+5y)^2

(x-5x)^2-(x+5y)^2
(x-5y)²-(x+5y)²
=[(x-5y)-(x+5y)][(x-5y)+(x+5y)]
=(-10y)(2x)
=-20xy


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(x-5y)^2-(x+5y)^2
=[(x-5y)-(x+5y)][(x-5y)+(x+5y)]
=(x-5y-x-5y)(x-5y+x+5y)
=-10y*2x
=-20xy

5x(x-y)+2y(x-y) 化简:5(x-y)+2(x+y)-3(x-y) (2x+y)²+(x+3y)(x-3y)-x(5x+8y)因式分解 已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y) （X+2Y)(5X-2Y) (x+2y)(5x-2y) 4x+2y-5x-y (2x-3y)-(5x-y) (2X-3y)-(5x-y) (x-y)^2+5(x-y)-14 (2x-5y)(3x+y) 因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+（x-3y)(x-5y)+(x-2y)(x-4y) [(x+2y)(x-2y)-(2x-y)^2+(3x-y))2x-5y)]/(-x)我急用 [(x+2y)(x-2y)-(2x-y)²+(3x-y(2x-5y)]/(-x)的解答 化简(4x-2y)-[5x-(8y-2x-x-y)]+x 化简(4x-2y)-﹛5x-[8y-2x-(x+y)]-x﹜ x+5x-3y-x+2y 计算：x(x-3y)(5x-2y)