Question

a (elevado á 3) -5a para a =-2

Answer 1

(_2) ^3 _5× _2= _8+10= +2

Answer 2

$dados = a = - 2$
${3}^{ - 5a}$
${3}^{ - 5 \times ( - 2)}$

${3}^{10}$
$59049$