Factorising Quadratics

Question 1:

x2+x2
x+2x1

Question 2:

x213x+40
x5x8

Question 3:

x212x+27
x9x3

Question 4:

x2+9x+20
x+5x+4

Question 5:

x23x18
x6x+3

Question 6:

x264
x+8x8