What are the solutions to the quadratic equation 4x2 = 64?

Question

asked Jul 11, 2018 80.5k views

1 Answer

Hasitha Jayawardana · Answer 1 · 2018-07-16T12:12:12+0000

The correct answer is: x =
$\pm 4$

Step-by-step explanation:

Given equation:

4x^2 = 64

Divide both sides by 4:

$(4x^2)/(4) =(64)/(4) \\ x^2 = 16$

Take square-root on both sides:

$√(x^2) = √(16) \\ x = \pm4$

Hence the correct answer is: x =
$\pm 4$