Question

Calcule as raizes das equacoes: x²-4=0

Answer 1

$x^{2} -4=0\to\\\\ x^{2} =4\to\\\\ x=\pm~ \sqrt{4} \to\\\\ x=\pm~2\\\\\\\\ \large\boxed{\boxed{S=\{-2~;~2\}}}$

Answer 2

Resposta:

ola

${x}^{2} - 4 = 0 \\ {x}^{2} = 4 \\ x = + - 2 \\ x = - 2 \\ x = 2 \\ s( - 2. \: 2)$

Explicação passo-a-passo:

bons estudos