a-1分之2a+2除以(a+1)+a05-2a+1分之a05-1化简得多少
问题描述:
a-1分之2a+2除以(a+1)+a05-2a+1分之a05-1化简得多少
答
(a-1)分之(2a+2)÷(a+1)+(a²-2a+1)分之(a²-1)
=(a-1)分之2(a+1)÷(a+1)+(a-1)²分之(a+1)(a-1)
=(a-1)分之2+(a-1)分之(a+1)
=(a-1)分之(a+3)