Solve each of the following equations by using the method of completing the square:
2x2 + 5x - 3 = 0
Given: 2x2 + 5x - 3 = 0
4x2 + 10x - 6 = 0 (multiplying both sides by 2)
4x2 + 10x = 6
(adding 
on both sides)
using a2 + 2ab + b2 = (a + b)2
(taking square root on both sides)
Hence the roots of equation are 
5