化简:a^2+3a+2/a^2+6a+5=()/a+5

问题描述:

化简:a^2+3a+2/a^2+6a+5=()/a+5

a^2+3a+2/a^2+6a+5
=(a+2)(a+1)/(a+1)(a+5)
=(a+2)/(a+5)