Question

Calcule.

a) (-7)² b) -7²​

Answer 1

${ \large \displaystyle \sf{a) \: ( - 7) {}^{2} = \boxed{ \pink{ 49 }}}}$

${ \large \displaystyle \sf{b) \: - 7 {}^{2} = \boxed{ \pink{ - 49 }}}}$

Explicação passo-a-passo :

${ \large \displaystyle \sf{a) \: ( - 7) {}^{2} = }}$

${ \large \displaystyle \sf{( - 7) \cdot( - 7) =}}$

${ \large \displaystyle \sf{ \boxed{ \pink{ \: 49 \: }}}}$

${ \large \displaystyle \sf{b) \: -7 {}^{2} = }}$

${ \large \displaystyle \sf{ -7 \cdot7=}}$

${ \large \displaystyle \sf{\boxed{ \pink{ -49 }}}}$