Factorising Quadratics

Question 1:

2 x2+3x+1
2x+1x+1

Question 2:

5 x2+13x6
5x2x+3

Question 3:

4 x2+17x15
4x3x+5

Question 4:

5 x2+22x+8
5x+2x+4

Question 5:

6 x2+19x+15
2x+33x+5

Question 6:

4 x2+16x+15
2x+52x+3