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