Answer:
the solution is:
[tex]x=\sqrt{7},\:x=-\sqrt{7}[/tex]
Step-by-step explanation:
Given the equation
[tex]x^2=7[/tex]
We need to get the solution
solving
[tex]x^2=7[/tex]
[tex]\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}[/tex]
[tex]x=\sqrt{7},\:x=-\sqrt{7}[/tex]
Thus, the solution is:
[tex]x=\sqrt{7},\:x=-\sqrt{7}[/tex]
