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LuccasEstudos2017
@LuccasEstudos2017
January 2020
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Sobre exponencial:
3.5^x²+3^x²+1-8.3^x²=0
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clementinog20
Verified answer
3.5^x²+(3^x².3-8.3^x²)=0
3.5^x²-5.3^x²=0
3.5^x²=5.3^x²
(3/5)^x² = (3/5)
x²=1
x= 1 ou x=-1
3 votes
Thanks 2
hcsmalves
Verified answer
Resolva a equação exponencial:
3.5ˣ² + 3ˣ²⁺¹ - 8.3ˣ² = 0
3.5ˣ² + 3.3ˣ² - 8.3ˣ² = 0
Seja x² = n
3.5ⁿ + 3.3ⁿ - 8.3ⁿ = 0
3.5ⁿ + (3 - 8).3ⁿ = 0
3.5ⁿ - 5.3ⁿ = 0
3.5ⁿ = 5.3ⁿ
3ⁿ/5ⁿ = (3/5)
(3/5)ⁿ = (3/5)¹
n = 1
Mas x² = n
x² = 1
x = - 1 ou x = 1
S = {-1, 1}
3 votes
Thanks 3
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Lista de comentários
Verified answer
3.5^x²+(3^x².3-8.3^x²)=03.5^x²-5.3^x²=0
3.5^x²=5.3^x²
(3/5)^x² = (3/5)
x²=1
x= 1 ou x=-1
Verified answer
Resolva a equação exponencial:3.5ˣ² + 3ˣ²⁺¹ - 8.3ˣ² = 0
3.5ˣ² + 3.3ˣ² - 8.3ˣ² = 0
Seja x² = n
3.5ⁿ + 3.3ⁿ - 8.3ⁿ = 0
3.5ⁿ + (3 - 8).3ⁿ = 0
3.5ⁿ - 5.3ⁿ = 0
3.5ⁿ = 5.3ⁿ
3ⁿ/5ⁿ = (3/5)
(3/5)ⁿ = (3/5)¹
n = 1
Mas x² = n
x² = 1
x = - 1 ou x = 1
S = {-1, 1}