Answer:
The correct answer is the second option:
Step-by-step explanation:
The idea is to get the variable for alone on one side. To do that follows the following steps:
1. Pass the number to subtract to the left.
2. Pass the letter to divide to the left side.
3. Take the squared root on both sides.
4. The right part can be simplified to because the power and the root are canceled.
5. The solution of the equations is:
Thus, the correct answer is the second option: