Question

Solve for x.


x^2 = 64
Select one of the options below as your answer:
A. -4, 4
B. -8, 8
C. -32, 32
D. -64, 64

Answer 1

That's easy:
It's + and - 8 or B

Answer 2

What you do is square root both sides

Answer 3

\[x= \pm \sqrt{64}\]
B. -8, 8

Answer 4

This gives you 8. When you square root something it always gives you two roots of the same number, a positive and a negative.

That is how you have +8 and -8