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CarlaCastro16
@CarlaCastro16
August 2019
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Resolva as equações exponenciais:
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AlekFelipe1
A) 10^1-X =100
10^1-X = 10^2
1 - X = 2
-X = 2 - 1
X = -1
b) 3^X-5 = 27^1 - X
3^X-5 = 3^3-3X
X - 5 = 3 - 3X
X + 3X = 3 + 5
4X = 8
X = 2
c) 5^X^2-2X = 125
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Thanks 5
judsonsousa
a letra A a resposta é -1 , pq ta assim 1-x=2. que fica -x=2-1. -x=1 (-1). x=-1
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Lista de comentários
10^1-X = 10^2
1 - X = 2
-X = 2 - 1
X = -1
b) 3^X-5 = 27^1 - X
3^X-5 = 3^3-3X
X - 5 = 3 - 3X
X + 3X = 3 + 5
4X = 8
X = 2
c) 5^X^2-2X = 125