Question

Encontre a raiz da função f(x)=x²-49 mim ajudem?

Answer 1

0 = x^2-49
x^2=49
x=√49
x=±7

Answer 2

$f(x)=x^2-49 \\ \\ x^{2} -49=0 \\ x^{2} =49 \\ \\ x=\pm \sqrt{49} \\ \\ x=-7~~~e~~~x=+7$