Question

Solve the quadratic equation by completing the square.

4x2 + 8x - 7 = 0
A) x =
2±
11
2
B) x =
2±
11
4
C) x = -
2±
11
2
D) x = -
2±
11
4

Answer 1

x=(-2+sqrt(11))/2, (-2-sqrt(11))/2.

Explanation:

Apply the quadratic formula with a=4, b=8 and c=-7.