Question

How many solutions are there to the equation below?

x² = 9
A. O
B. 4
C. 9
D. 1
E. 2

Answer 1

Answer: E. 2

Explanation:

x²=9

x=±3 ⇔ since it is square (any value after square will always be positive), the value can be negative or positive.

There are 2 solutions: 3 and -3

Hope this helps!! :)