### Home > PC > Chapter 4 > Lesson 4.2.2 > Problem 4-91

4-91.

Solve for :

Isolate the on the left side by subtracting

Factor out an '' on the left side.

Divide both sides by 's factor solving for

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4-91.

Solve for :

Isolate the on the left side by subtracting

Factor out an '' on the left side.

Divide both sides by 's factor solving for