1.6y^2-11y-102.5x^5-15x^3y-20xy^2
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1.6y^2-11y-102.5x^5-15x^3y-20xy^2
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
5x(x-y)+2y(x-y)
化简:5(x-y)+2(x+y)-3(x-y)
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
x+2y=5x-6y=11
3*X=Y X/2=Y/5+11
{2x+y=74x+5y=11
2x+4y-5x-y+12-11frgbnihai
(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)