1. Jen Markham

3. Let’s call everything that comes after the first 2, “ n”, (why can we do that??) so we can rewrite the expression as: If n=

4. To solve for n, square both sides. Factorable???

5. Using the quadratic formula…

7. However, n=-1 is an extraneous root because if we check it in our original equation, n=-1 doesn’t check! The final answer is n=2. Splitting the two roots apart yields, or

8. The final answer is n=2.