Question

What are the solutions to this equation?
7x2 − 28 = 0

Answer 1

x=-2 & x=2

Explanation:

PLATO

Answer 2

x = 2 or x = -2

Explanation:

7x^2 - 28 = 0

7x^2 = 28

x^2 = 28/7 = 4

x = root(4) or x = -root(4)

x = 2 or x = -2