Question

find the root of the Q.E by completing the square method of 4X^2+X-5​

Answer 1

Answer: X = 1 and -5/4

Step-by-step explanation:

4X^2 + X - 5 = 0

4X^2 +X + 1/16 = 5+1/16

(2X + 1/4)^2 = 81/16

2 cases:

2X+1/4 = 9/4 → X = 1

2X+1/4 = -9/4 → X= -5/4