2x-6/(4-4x+4x^2)÷(x+3)×[(x+3)(x-2)]/(3-x)
问题描述：
2x-6/(4-4x+4x^2)÷(x+3)×[(x+3)(x-2)]/(3-x)
答
(2x-6)/(4-4x+x^2)÷(x+3)×[(x+3)(x-2)]/(3-x) =2(x-3)/(4-4x+x^2)×1/(x+3)×[(x+3)(x-2)]/(3-x) =2(x-3)/(4-4x+x^2)×(x-2)/(3-x) =-2(x-3)/(4-4x+x^2)×(x-2)/(x-3) =-2(x-2)/(4-4x+x^2)=-2(x-2)/(x-2)^2=-2/(x-...