Answer:
0 or 1
Step-by-step explanation:
Hello, first of all we need x positive so that [tex]\sqrt{x}[/tex] is defined and then
[tex](\sqrt{x})^2=x=(x^2)^2=x^4\\\\<=>x^4-x=0\\\\<=>x(x^3-1)=0\\\\<=>x= 0 \ \ or \ \ x^3=1\\\\<=>x=0 \ \ or \ \ x = 1[/tex]
Thank you