Question

Preciso urgenteeeeee​

Answer 1

Explicação passo-a-passo:

$a) \sqrt{243} \times 5 \sqrt{3} \ \times 3 \sqrt{3} \\ 5 \times 3\sqrt{243 \times 3 \times 3} \\ 15 \sqrt{ {3}^{5} \times {3}^{2}} \\ 15 \sqrt{ {3}^{7} } \\ 15 \sqrt{ {3}^{6} \times 3} \\ 15 \times {3}^{3} \sqrt{3} \\ 15 \times 27 \sqrt{3} \\ 405 \sqrt{3}$

$b)3 \sqrt[3]{56} \times 3\sqrt[3]{7} \times 2 \sqrt[3]{7} \\ 3 \times 3 \times 2 \times \sqrt[3]{56 \times 7 \times 7} \\ 12 \sqrt[3]{8 \times 7 \times 7 \times 7} \\ 12 \sqrt[3]{ {2}^{3} \times {7}^{3} } \\ 12 \times 2 \times 7 \\ 168$