Answer:
(a) C = +9
(b) C = -9
Step-by-step explanation:
Given:
The equation to solve is given as:
In order to solve this for 'C', we have to isolate 'C' on the left side of the equation.
Adding -15 on both sides, we get:
Now, taking square root on both the sides, we get:
Therefore, there are two values of 'C'.
Therefore, options (a) and (b) are correct.