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Brunosouza203
@Brunosouza203
December 2019
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4.3^x + 3^x . 3^x+2 = 13 (EQUAÇÃO EXPONENCIAL)
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albertrieben
Boa noite Bruno
4*3^x + 3^(2x+2) = 13
4*3^x + 9*3^2x = 13
y = 3^x
9y² + 4y - 13 = 0
delta
d² = 16 + 36*13 = 484
d = 22
y1 = (-4 + 22)/18 = 1
3^x = 3^0
x = 0
1 votes
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4*3^x + 3^(2x+2) = 13
4*3^x + 9*3^2x = 13
y = 3^x
9y² + 4y - 13 = 0
delta
d² = 16 + 36*13 = 484
d = 22
y1 = (-4 + 22)/18 = 1
3^x = 3^0
x = 0