(x-2-5÷x 2)÷x-3÷2x 4 化简

问题描述:

(x-2-5÷x 2)÷x-3÷2x 4 化简
紧急 、

原式=[(x-2)(x+2)-5]/(x+2)×[2(x+2)/(x-3)]=(x²-4-5)/(x+2)×[2(x+2)/(x-3)]=(x²-9)/(x+2)×[2(x+2)/(x-3)]=(x+3)(x-3)/(x+2)×[2(x+2)/(x-3)]=2(x+2)(x+3)(x-3)/(x+2)(x-3)=2x+6((x-2-5)÷(x+2))÷(x-3)÷(2x 4) 化简