Question

DETERMINE o conjunto solucao da equacao :√√X+7+7=4

Answer 1

$\sqrt{ \sqrt{x+7+7} } =4 \\ \\ \sqrt{ \sqrt{x+14} } =4 \\ \\(\sqrt{ \sqrt{x+14} })^2=4^2 \\ \\ \sqrt{x+14} =16 \\ \\ (\sqrt{x+14} )^2=16 ^2 \\ \\ x+14=256 \\ \\ x=256-14 \\ \\ x=242$