Question

por favor alguem me ajuda ​

Answer 1

$a) \: \: \: \: \sqrt{49} \times 3 {}^{2} \\ \\ \sqrt{7 {}^{2} } \times 9 \\ \\ 7 \times 9 \\ \\ 63 \\ \\ b) \: \: \: \: \: \frac{\sqrt[3]{216} \times \sqrt[3]{1000} - \sqrt[3]{729}}{3} + \sqrt{36} \\ \\ \frac{ \sqrt[3]{ {6}^{3} } \times \sqrt[3]{ {10}^{3} } - \sqrt[3]{ {9}^{3} } }{3} - \sqrt{6 {}^{2} } \\ \\ \frac{6 \times 10 - 9}{3} - 6 \\ \\ \frac{60 - 9}{3} - 6 \\ \\ \frac{51}{3} - 6 \\ \\ 17 - 6 \\ \\ 11$