Question

If x2 = 30, what is the value of x?
A. ±60 B. ±15 C. ±square root of 30 D.±square root of 15

Answer 1

C. ±square root of 30

Explanation:

Apply the square root function to both sides of the equation:

`√(x^2)=√(30)\\\\|x|=√(30)\\\\x=\pm√(30)`

_____

The absolute value equation has two solutions. They match choice C.