Question

071 Se y = log √5 5√5 entao:
A) y = 1
B) y = 2
C) y = 3
D) y = 4 (nao apareceu na foto)​

Answer 1

Resposta:

$(\sqrt{5})^{y} = 5.\sqrt[]{5}$

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$5^{1/2y} = 5^{1} . 5^{1/2}\\\\===========================\\\\5^{1/2y\\ = 5^{3/2}$

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Cancelo os 5

y         3

--   =   ----

2         2

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x = 3