Answer:
The answer is x = y² .
Step-by-step explanation:
In order to make x the subject, you have to square to both sides to get rid of square root :
[tex]y = \sqrt{x} [/tex]
[tex] {y}^{2} = {( \sqrt{x}) }^{2} [/tex]
[tex] {y}^{2} = x[/tex]
[tex]x = {y}^{2} [/tex]
