a(x-a)(x+y)²-b(a-x)²(y+x)怎么算?
a(x-a)(x+y)²-b(a-x)²(y+x)怎么算?
因式分解 a²(y-x)+(x-y)
(5)a(x+y)-b(x+y)-x-y
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
已知集合A={(x,y)|(y-2)/(x-1)=a+2,x,y∈R},B={(x,y)|(a²-4)x+(a
(x+y)*(a+2b)怎么做
已知集合A={(x,y)|x²+y²≤1.x.y∈R},B={(x,y)||x|+|y|≤2.x.y
1、(a-b)(x-y)-(b-a)(x+y)
(a+b)(x+y)-(a+b)(x-y)分解因式
因式分解,(a-b)(x-y)-(b-a)(x-y)
(a-b)(x-y)+(b-a)(y-x)
(x+y)(a-2b)