Question

Find the solutions to the equation below.

Check all that apply
X^2-9=0
A X=-2
B. x= 3
C. x= -1
D. x= 2
Ex= 1
F. x= -3

Answer 1

We need to isolate x. We can do that by adding 9 to both sides which gives us x^2 = 9. Next, we can isolate x by taking the square root from both sides. This gives us x = 3. Additionally, x = -3 is also an answer because a negative squared becomes positive.

The answers are: x = 3, x = -3.