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Nathyydias
@Nathyydias
January 2020
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Determine em cada caso :
a) log9 b= 1/2
b)log27 (x+5)= 1/3
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BetShammah
A)
log ₉ b = 1/2
9¹/² = b
b = √9
b = 3
b)
log ₂₇ (x+5) = 1/3
x + 5 = 27¹/³
x + 5 = ∛27
x + 5 = 3
x = 3 - 5
x = -2
2 votes
Thanks 1
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Lista de comentários
log ₉ b = 1/2
9¹/² = b
b = √9
b = 3
b)
log ₂₇ (x+5) = 1/3
x + 5 = 27¹/³
x + 5 = ∛27
x + 5 = 3
x = 3 - 5
x = -2