Question

What are the solutions to the quadratic equation 4x^2 = 64?

Answer 1

x = 4 or x = -4

Explanation:

4x² = 64

4x² - 64 = 0

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

x = ± 4

Answer 2

Answer: 4x^{2} =64

x^{2} =16

x= \sqrt{16}

The square root of 16 is either positive four or negative four.