Question 949465
The 2 looks like a factor and needs to be written (5x - 2)^2 = 10.


Simply reversing everything done to x, and doing so to BOTH sides of the equation, will give solutions for x.


What was done to x?
multiplied by 5;
added negative 2;
squared;
All of that set equal to 10.


What to do to solve?
Undo everything going in reverse of the sequence of steps.


ANSWER:  NONE of the choices listed is correct.
You should find the solution is equivalent to {{{2/5+- sqrt(10)/5}}}.