Solving Quadratics by Factorising

Question 1:

x25x = 0
x = 0 or x = 5

Question 2:

x2 16 = 0
x = 4 or x = -4

Question 3:

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

Question 4:

x23x54 = 0
x = 9 or x = -6

Question 5:

x211x =18
x = 9 or x = 2

Question 6:

5 x233x+18 = 0
x =35 or 6