Question

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

Answer 1

Answer:

(a) C = +9

(b) C = -9

Step-by-step 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:

$\sqrt{C^2}=\pm\sqrt{81}\\\\C=\pm\sqrt{9^2}\\\\C=\pm9$

Therefore, there are two values of 'C'.

$C = 9\ and\ C = -9$

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