Factorising Quadratics

Question 1:

x2+x20
x4x+5

Question 2:

x214x+48
x6x8

Question 3:

x24x5
x5x+1

Question 4:

x2+12x+20
x+2x+10

Question 5:

x212x+20
x10x2

Question 6:

x212x+35
x7x5