(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
问题描述:
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(2) 已知x+3/(x-2)^2=A/x-2 + B/(x-2)^2 ,求A和B的值.
答
1) (x-3)/(x-2)-(x-5)/(x-4)=(x-7)/(x-6)- (x-9)/(x-8)化简得 【(x-3)(x-4)-(x-5)/(x-2)】/【(x-2)(x-4)】=【(x-7)(x-8)- (x-9)(x-6)】/【(x-6)(x-8)】化简 2/【(x-2)...