Factorising Quadratics

Question 1:

x216x+63
x7x9

Question 2:

x210x+25
x5x5

Question 3:

x2+4x5
x1x+5

Question 4:

x215x+56
x7x8

Question 5:

x26x27
x9x+3

Question 6:

x28x+15
x5x3