Solving Quadratics by Factorising

Question 1:

x2+11x+30 = 0
x = -5 or x = -6

Question 2:

x29x+20 = 0
x = 5 or x = 4

Question 3:

x2+9x+18 = 0
x = -3 or x = -6

Question 4:

x2+3x+2 = 0
x = -2 or x = -1

Question 5:

x24x12 = 0
x = -2 or x = 6

Question 6:

x214x+49 = 0
x = 7