Question #N818
The function *f* is defined by *f*(x) = *x*<sup>2</sup> + 5. If *f*(x) = 14, what are the possible values of *x*?
A. -3 and 3
B. -2 and 2
C. -1 and 1
D. 0 and 10
Correct Answer is: B
To solve for *x*, we first set *f*(x) equal to 14: *x*<sup>2</sup> + 5 = 14. Subtracting 5 from both sides, we get *x*<sup>2</sup> = 9. Taking the square root of both sides, we get *x* = ±3. Therefore, the possible values of *x* are -3 and 3.