Solve each of the following equations by using the method of completing the square:

Given:


2x2 - 5x + 2 = 0


4x2 - 10x + 4 = 0


4x2 - 10x = - 4 (multiplying both sides by 2)


(adding on both sides)


using a2 - 2ab + b2 = (a - b)2


(taking square root on both sides)





Hence the roots of equation are


11