### Home > PC > Chapter 1 > Lesson 1.2.1 > Problem 1-73

1-73.

Given

*f*(*x*) =*x*^{2}+*x*and*g*(*x*) =*x*+ 1, find: Homework Help ✎*g*(*f*(*x*))*f*(*g*(*x*))For what value(s) of

*x*will*f*(*g*(*x*)) = 2?

Substitute (*x*^{2} + *x*) for every *x* in the *g* function.

Substitute (*x* + 1) for every *x* in the *f* function.

*x*^{2} + 3*x* +2 = 2

Now set the equation equal to 0 and solve.