Question

scrr, me ajudem aaaaa​

Answer 1

A)

$\sqrt{7} ( \sqrt{7} + \sqrt{2} ) = \\ \sqrt{7} \times \sqrt{7} + \sqrt{14} = \sqrt{49} + \sqrt{14} \\ 7 + \sqrt{14}$

B)

$\sqrt{2} ( \sqrt{32} - 5) = \\ \sqrt{2} \times \sqrt{32} - 5 \sqrt{2} = \sqrt{64} - 5 \sqrt{2} \\ 8 - 5 \sqrt{2}$

C)

$\sqrt[3]{3} ( \sqrt[3]{72} + \sqrt[3]{3} ) = \\ \sqrt[3]{216} + \sqrt[3]{9} = \\ 6 + \sqrt[3]{9}$