Question

Resolva as Equações:

${3x}^{2} = 12$
${5x}^{2} - 90 = 0$

Answer 1

$3x ^{2} = 12 \\ x ^{2} = 12 \div 3 \\ x ^{2} = 4 \\ x = \sqrt{4 } \\ x = 2$