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Marcionedes
@Marcionedes
December 2019
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Resolva as equações exponenciais:
a)
b)
c)
d)
e)
f)
g)
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TiagoEd
A) 2^2 * 2^2x = 2^7
2 + 2x = 7
2x = 5
x = 5/2
b) 3^5x - 25 = 3^0
5x - 25 = 0
5x = 25
x = 25/5
x = 5
c) 3^2x = 3^3(x-2)
2x = 3x - 6
-x = -6 *(-1)
x = 6
d) 7^2x = 7^-2
2x = -2
x = -2/2
x = -1
e) 4^x = 64^1/5
2^2x = 2^6(1/5)
2x = 6/5
x =6/5 / 2
x = 6/5 * 1/2
x = 6/10
x = 3/5
f) 5^2x-5 = 5^3
2x - 5 = 3
2x = 8
x = 8/2
x = 4
g) 2^x = 2^4
x = 4
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Lista de comentários
2 + 2x = 7
2x = 5
x = 5/2
b) 3^5x - 25 = 3^0
5x - 25 = 0
5x = 25
x = 25/5
x = 5
c) 3^2x = 3^3(x-2)
2x = 3x - 6
-x = -6 *(-1)
x = 6
d) 7^2x = 7^-2
2x = -2
x = -2/2
x = -1
e) 4^x = 64^1/5
2^2x = 2^6(1/5)
2x = 6/5
x =6/5 / 2
x = 6/5 * 1/2
x = 6/10
x = 3/5
f) 5^2x-5 = 5^3
2x - 5 = 3
2x = 8
x = 8/2
x = 4
g) 2^x = 2^4
x = 4