Question

9 = 8c + 15/c what is c?

Answer 1

`c = (9 \pm i√(399))/(16)`

Explanation:

9 = 8c + 15/c

9c = 8c² + 15

8c² - 9c + 15 = 0

`c = (-(-9) \pm √((-9)^2 - 4(8)(15)))/(2(8))`

`c = (9 \pm √(81 - 480))/(16)`

`c = (9 \pm √(-399))/(16)`

`c = (9 \pm i√(399))/(16)`