### Home > CALC > Chapter 7 > Lesson 7.1.3 > Problem 7-30

7-30.

Greta is trying to solve

*x*− 3= −2. She decides to simplify the problem by letting *u*=. Homework Help ✎ Rewrite Greta's equation using

*u*, then solve for*u.*Suppose

*x*= 5, what would*u*be?

*u*^{2} − 3*u* = −2

Solve for *u*.

If *u* = 2 and *u* = 1, what is *x*?

Refer to the given information.