__Questions:__**Simplify each expression.**

- 7x - 8y + 9x
- 5y
^{2}- 4y - 2y^{2} - 4m - 9n - 3 + 6n
- -5x + 16 - 8x - 14 + 10x
- 9x - 6 + 8x
^{2}+ 13

Answer:

- 16x - 8y
- 3y
^{2}- 4y - 4m - 3n
- -3x + 2
- 8x
^{2}+ 9x + 7

Reference:

Complete Test Preparation for the GED Test 2014 by Steck-Vaughn