Factorising Quadratics

Question 1:

2 x2+13x+15
2x+3x+5

Question 2:

2 x2+7x30
2x5x+6

Question 3:

5 x221x+18
5x6x3

Question 4:

5 x28x4
5x+2x2

Question 5:

6 x211x+4
2x13x4

Question 6:

6 x223x+20
3x42x5