Question

15+C2 = 96
a. C= +9
b. C-9
C. C = +9.79
d. C = 9.79​

Answer 1

(a) C = +9

(b) C = -9

Explanation:

Given:

The equation to solve is given as:

`15+ C^2=96`

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:

`15-15+C^2=96-15\\\\C^2=81`

Now, taking square root on both the sides, we get:

`√(C^2)=\pm√(81)\\\\C=\pm√(9^2)\\\\C=\pm9`

Therefore, there are two values of 'C'.

`C = 9\ and\ C = -9`

Therefore, options (a) and (b) are correct.