Question

How many solutions are there to the equation below?

x2 = 16
O A. 2
B. 16
C. 1
O D.O
E. 4

Answer 1

A.2

Explanation:

x² = 16

take the square root of both sides

x = ±4

there are 2 solutions to the equations, those 2 solutions being 4 and -4

just to double check

4² = 4 × 4 = 16

-4² = -4 × -4 = 16