Question

What are the solutions to the equation x2 = 64?

A.
8 only

B.
32 and –32

C.
8 and –8

D.
32 only

Answer 1

`x^2=64`

`√(x^2)=\pm√(64)`

`x=\pm8`


`(\pm32)^2` is 1,024.
Also, all square root functions have a positive and a negative result.