Write the following in the form ax+b2+c

Question 1:

3x2+15x+5
3x+522554

Question 2:

4x2+2x+3
4x+142+114

Question 3:

2x211x1
2x11421298

Question 4:

4x210x+7
4x542+34

Question 5:

5x22x+6
5x152+295

Question 6:

4x212x4
4x32213