Factorising Quadratics

Question 1:

x2+17x+72
x+9x+8

Question 2:

x2+19x+90
x+10x+9

Question 3:

x2+15x+54
x+6x+9

Question 4:

x2−5x+4
x−1x−4

Question 5:

x2+11x+30
x+6x+5

Question 6:

x2−5x−50
x−10x+5