What are the solutions to the quadratic equation 4x2 = 64? x = −16 and x = 16 x = −8 and x = 8 x = −4 and x = 4 x = −2 and x = 2

Question

asked Feb 13, 2017 196k views

2 Answers

Photoionized · Answer 1 · 2017-02-19T19:48:18+0000

Answer:

Option 3rd is correct

x = -4 and x = 4

Explanation:

Given the equation:

4x^2 = 64

Divide both sides by 4 we have;

x^2 = 16

Take square root both sides we have;

$√(x^2) = \pm √(16)$

Simplify:

$x = \pm 4$

Therefore, the solution for the given equation are:

x = -4 and x = 4