Question

plz help me out in this question with full process ​

Answer 1

$HEYA \: \\ \\ \sqrt{2 + \sqrt{x} } = 3 \\ squaring \: on \: both \: sides \: we \: have \\ \\ 2 + \sqrt{x} = 9 \\ \\ \sqrt{x} = 9 - 2 \\ \\ \sqrt{x} = 7 \\ \\ again \: squaring \: on \: both \: sides \: we \: get \\ \\ x = 49 \: \:$