Question

qual a potencia de
$23 { }^{2} = (20 + 3) {}^{2} =$

Answer 1

${23}^{2} = {(20 + 3)}^{2} \\ \sqrt{ {23}^{2} } = \sqrt{ {(20 + 3)}^{2} } \\ 23 = 20 + 3 \\ 23 = 23\\\\23^2=529$