Question

4x^2-x-5=0 solve by completing the square

Answer 1

Explanation:

4x^2-x-5=0

4x^2-x=5

x^2-x/4=5/4

x^2-x/4 + ?=5/4 + ?

x^2-x/4 + 1/64 =5/4 + 1/64

(x-1/8)^2 = 81/64

x = -1

x = 5/4