### Home > A2C > Chapter 4 > Lesson 4.1.4 > Problem 4-58

4-58.

If

*g*(*x*) =*x*^{2}− 5, find the value(s) of*x*so that: Homework Help ✎*g*(*x*) = 20*g*(*x*) = 6

Substitute 20 for *g*(*x*). Solve for *x*. Remember that squaring a negative number results in a positive number, so there should be two solutions.

±5

Refer to part (a).