Question

y ao quadrado menos 25 igual a zero ​

Answer 1

$\sf y {}^{2} - 25 = 0 \\ \\ \\ \sf y {}^{2} = 25 \\ \\ \\ \sf y = \pm\sqrt{25} \\ \\ \\ \sf y = \pm \sqrt{5 {}^{2} } \\ \\ \\ {\color{red}\sf y = \pm5}$

Att: Nerd1990