Question

explica porque $(3)^{2}$ es igual a $(-3)^{2}$

Answer 1

Por ésta propiedad:

${(a \times b)}^{2} = {a}^{2} \times {b}^{2}$

...

${(3)}^{2} = {( - 3)}^{2} \\ {(1 \times 3)}^{2} = {( - 1 \times 3)}^{2} \\ {1}^{2} \times {3}^{2} = {( - 1)}^{2} \times {3}^{2} \\ 1 \times 9 = 1 \times 9 \\ 9 = 9$