Question

5•10ao cubo•4•10ao cubo=

Answer 1

Boa noite!!

$= 5 \times {10}^{3} \times 4 \times {10}^{3} \\ = 5 \times 4 \times {10}^{3} \times {10}^{3} \\ = 20 \times {10}^{3 + 3} \\ = 20 \times {10}^{6} \\ = 2 \times {10}^{7} \\ = 20000000$

Espero ter ajudado!! ^_^