(a^2-9y^2)-(a+3y)
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(a^2-9y^2)-(a+3y)
(a^2-9y^2)-(a+3y)
(a^2-9y^2)-(a+3y)
(a^2-9y^2)-(a+3y)
=(a-3y)(a+3y)-(a+3y)
=(a-3y-1)(a+3y)
(a^2-9y^2)-(a+3y)
36a^3(x-y)^2/27a(y-x)
5a(x-y)^2+10a(y-x)^3
Y+9Y/3=?a*a+a*2=?10x*3+x=?
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
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因式分解:4a^2(x-y)+9(y-x) -4x^2y^2+x^3y+4xy^3
因式分解:(x+y)^3(x-y)-(x+y)(x-y)^3,9x^2-16(a+b)^2
(3a^3/X+Y)^3*(X^2-Y^2)除以(Y-X/Y+X)^2
(x+y)²+2(y-x) 因式分解 怎么弄 我这还有几道题(x+y)²-(x+y)(x-z)+(x+y)(y+z)X(X-a)(x-b)-y(a-x)(b-x)x(x+y)(x-y)-x(x+y)²(2a+b)(2a-3b)-3b(2a+b)(a+b)²-9(a-b)²(a²+b²)²-a²b²9(x-y)-y&
a^2(x-y)+(y-x)因式分解
2x^2y*A=(-6x^3y^2+9X^2y^3 ,求A=?
已知A={y|y^2-(a^2+a+1)y+a(a^2+1)>0},
a(x+y)的平方-2a(x+y )+a
a(x+y)^2+4a-4a(x+y)
解下列关于x,y的方程组y-2x=a 3x+2y=9a
解关于x,y的方程组y-2x=a,3x+2y=9a