(a-b)(x-y)-(b-a)(x+y)
因式分解(a-b)²(x-y)-(b-a)(y-x)²=(a-b)(x-y)×( )
通分x/a(x-y),y/b(y-x) 通分 a/(y-x)的平方,b/(x-y)*(x+y)
分解公因式的题 x(a-x)(a-y)-y(x-a)(y-a)-ab(a-b)^2+a(b-a)^2a^3b-ab2ab
已知实数a,b,x,y,满足不等式(a+b)(x+y)>2(ay+bx),求证(x-y)/(a-b)+(a-b)/(x-
因式分解:x^2y^2-4x a(a-b)-2b(b-a)
3a(x+y)-2b(x+y)=(x+y)(?)
因式分解a(x-y)+b(y-x)+c(x-y)
(x-A)*(B-y)=x^2-9xy+8y^2,求A,B
速度解答 (y-x)(a-b+c)+(x-y)(b-a-c)
已知a、b、x、y属于R+且1/a>1/b,x>y求证:x/(x+a)>y/(y+b)
1.x(x-y)+y(y-x)2.9(a-b)^2-16(a+b)^2 3.25(x-y)^2+10(y-x)+1
分解因式:x(x-y)(a-b)-y(y-x)(b-a).