Answer:

evaluate the expression and show your solution

1. ) x2 + 8x = 9

x² + 8x - 9 = 0

2.) 3x² - 2 = 5x

3x² - 5x - 2 = 0

3.) 5x² + 10x = x + 4

5x² + 9x - 4 = 0

4.) 15 - 3x = -2x²

2x² - 3x + 15 = 0

5.) 6x² - 4x 2x² - 1

8x² - 4x - 1 = 0