Question

2.Resolve
a)
${x}^{2} - 16 = 0$
Por favor mim ajudem a resolver​

Answer 1

Explicação passo-a-passo:

$x^{2} -16=0\\\\x^{2} =16\\\\x=\pm\sqrt{16}\\\\x=\pm4\\\\\boxed{\boxed{S=\{-4, 4\} }}$