ab^2(x+y)^p+a^2b(x+y)^(p+1) x(想^2-y^2)-y(x-y)^2
分解公因式p(x-y)-q(y-x)(a+b)(a-b)-(b+a)10a(x-y)^2-5b(y-x)3p(m-2n)
数学题已知p=x^/x-y-y^/x-y,q=(x+y)^-2Y(X+Y),
因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)(
设动点P与P'的坐标为(X,Y)(X',Y')它们满足X'=3X+2Y+1,Y'=X+4Y-3.
1、x(x-y)(x+y)-x(x+y)^2
(2x+y)(2x-3y)+x(2y+y) 2a(x-y)-4b(x-y)
设全集I={(x,y)|x,y∈R},集合P={(x,y)|y=x2+2bx+1},Q={(x,y)|y=2a(x+b)
(1)(x^2/x)-y-x-y
U={(x,y)|x∈R,y∈R},A={(x,y)|2x-y+a>0},B={(x,y)|x+2y-b≤0},则点P(
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
已知A(2,4),B(3,2) P(x,y) 在线段AB上
已知P=x²/x-y-y²/x-y,Q=(x+y)²-2y(x+y),小红、小华两人在x=