Factorising Quadratics

Question 1:

x2+x6
x+3x2

Question 2:

x2+4x12
x+6x2

Question 3:

x24x45
x9x+5

Question 4:

x26x+5
x5x1

Question 5:

x2+10x+9
x+9x+1

Question 6:

x2+13x+36
x+9x+4