x^2-y^2/ax-bx+ay-by等于多少?
问题描述：
x^2-y^2/ax-bx+ay-by等于多少?
答
(x-y)/(a-b)..过程告诉我。。。(x^2-y^2)/(ax-bx+ay-by)=(x+y)(x-y)/(a-b)(x+y)=(x-y)/(a-b)
x^2-y^2/ax-bx+ay-by等于多少?
(x-y)/(a-b)..过程告诉我。。。(x^2-y^2)/(ax-bx+ay-by)=(x+y)(x-y)/(a-b)(x+y)=(x-y)/(a-b)