Answer:

Step-by-step explanation:
Given equation:

Solving for unknown variable 
Adding 8 both sides by additive property of equality.


Squaring both sides to remove the square root.


Adding 5 both sides by additive property of equality.


Dividing both sides by 6 to isolate 

∴ 
Hhhhhhhhhhhhjjjjjjjjjjjjjjjjjjjjjjjjjjjj
<span>3<span>x^2</span></span>−<span>16 I think that's the answer. Hope that helps!</span>