Question

Efetue as multiplicações,indicando o resultado sem radical:
A)√17.√17=
B)∛5.∛25
C)√2.√40,5

Answer 1

a) √17 x√17= (√17)²= 17

b)∛5 x ∛25= (∛125)= 25

c)√2 x√40,5 = (√81) =9

Answer 2

$a) \ \sqrt{17} \cdot\sqrt{17} =\sqrt{17^2}=17\\ \\b) \sqrt[3]{5} \cdot \sqrt[3]{25}= \sqrt[3]{5\cdot25}= \sqrt[3]{125}=5\\ \\c) \sqrt{2}\cdot \sqrt{40,5} = \sqrt{2\cdot40,5} = \sqrt{81} =9$