Question

Simplifique as taferas

a)3√3√7?

5
b)15√3

C)√13aoquadrado?

Answer 1

$3 .\sqrt{3} . \sqrt{7} \\ \\ 3 .\sqrt{7.3} \\ \\ 3. \sqrt{21}$

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$15 \sqrt{3^5} = \\ \\ 15 \sqrt{3^4.3} = \\ \\ 15.3^2 \sqrt{3}= \\ \\ 15.9 \sqrt{3} \\ \\ 135 \sqrt{3}$

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$\sqrt{13^2} = 13$

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$\sqrt{13^3} = \sqrt{13^2.13} =13 \sqrt{13}$

Answer 2

A) (√3²+√7)
(3)²+2.√7.√3+(3)²
7+2.√7.√3+3=
10+2.√21

B)-15/√3/-15√3/√3√3=-15 √3 /3=- 5√3