Question

Calcule as expressões:

Answer 1

Explicação passo-a-passo:

$3 \sqrt{5 } - 2 \sqrt[3]{5} + 3 \sqrt[3]{5} + 9 \sqrt{5} = \\ 3 \sqrt{5} + 9 \sqrt{9} + 3 \sqrt[3]{5} - \sqrt[3]{5} = \\ (3 + 9) \sqrt{5} +( 3 - 2) \sqrt[3]{3} = \\ 6 \sqrt{5} + \sqrt[3]{5} .$

$7 \sqrt{2} - 5 \sqrt{2} + \sqrt{2} - 10 \sqrt[3]{2} = \\ (7 - 5 + 1) \sqrt{2} - 10 \sqrt[3]{2} = \\ 3 \sqrt{2} - 10 \sqrt[3]{2} .$

$- \sqrt{3} - 9 \sqrt{2} + \sqrt{3} - 8 \sqrt{2} = \\ ( - 1 + 1) \sqrt{3} + ( - 9 - 8) \sqrt{2} = \\ 0 \sqrt{3} - 17\sqrt{2} = \\ - 17 \sqrt{2} .$