Factorising Quadratics

Question 1:

x24x45
x9x+5

Question 2:

x2x2
x2x+1

Question 3:

x2+2x24
x4x+6

Question 4:

x2+2x3
x+3x1

Question 5:

x26x7
x7x+1

Question 6:

x23x4
x+1x4