Question

Help, please, I can't seem to find another one like this

Answer 1

B

Explanation:

First, let's get the square root by itself.

`√(2x)` - 1 = 3 Original equation

`√(2x)` = 4 Add 1 to both sides

Now, let's get rid of the square root and solve.

`√(2x)` = 4 Original equation
2x = 16 Square both sides
x = 8 Divide both sides by 2

Now we know that x equals 8. The answer choice would be B.