Question

F(x) = X² - 7 + 4 = -2

Answer 1

${x}^{2}-7+4=-2\\{x}^{2}=7-4-2\\{x}^{2}=1\\x=\pm\sqrt{1}$

$\boxed{\boxed{\mathsf{x=\pm1}}}$

$\boxed{\boxed{\mathsf{s=\{-1,1\}}}}$