4a2+4a+3=(2a+1)2+_______.

2025-04-06 10:44:55
推荐回答(4个)
回答1:

4a2+1..............................

回答2:

回答3:

4a²+4a+3-(2a+1)²
=4a²+4a+3-(4a²+4a+1)
=4a²+4a+3-4a²-4a-1
=2
∴ 4a²+4a+3=(2a+1)²+2

回答4:

(2a+1)2=4a2+4a+1
4a2+4a+3-(4a2+4a+1)=2