Question

How do I Solve for x.
4x^2-64=0

Answer 1

x = 4, -4

Explanation:

You can do this by simply pressing the calculator OR by simplify

4x^2 - 64 = 0

(2x)^2 - 8^2 = 0

(2x - 8)(2x + 8) = 0

∴ 2x - 8 = 0 or 2x + 8 = 0

x = 4 or x = -4

Answer 2

Explanation:

.

4

2