Question

Calcule as potências:

Answer 1

Letra A:

$\sf     \Big( x {}^{4}\Big ) {}^{2} \\ \\ \\ \sf     x {}^{4 \cdot2} \\ \\ \\ {\color{red}\boxed{\sf x {}^{8} }}$

Letra B:

$\sf     \Big( - 8a {}^{5} \Big) {}^{2} \\ \\ \\ \sf     ( - 8) {}^{2} \cdot\Big(a {}^{5} \Big) {}^{2} \\ \\ \\ \sf     ( - 8 \cdot - 8) \cdot\Big(a {}^{5} \Big) {}^{2} \\ \\ \\ \sf     64 \cdot\Big(a {}^{5} \Big) {}^{2} \\ \\ \\ \sf     64 \cdot a {}^{5 \cdot2} \\ \\ \\ \sf     64 \cdot a {}^{10} \\ \\ \\ {\color{red}\boxed{\sf 64a {}^{10} }}$

Att: Nerd1990