Question

3 y ao quadrado - 27 = 0 ​

Answer 1

Resposta:

${3y}^{2} - 27 = 0 \\ {3y}^{2 } = 27 \\ {y}^{2} = 27 \div 3 \\ {y}^{2} = 9 \\ y = \sqrt{9} \\ y = 3$