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BarbaraCTG
@BarbaraCTG
April 2022
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Resolva a inequação do 2º grau:
x² - 6x + 8 < 0
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augustofernand
x² - 6x + 8 < 0
Δ = b² - 4*a*c
Δ = (-6)² - 4*1*8
Δ = 36 - 32
Δ = 4
(-b +-
√Δ)/2*a
(-(-6)+-√4)/2
(6+-2)/2
x' = 6+2/2
x' = 8/2
x' = 4
x'' = 6-2/2
x'' = 4/2
x'' = 2
x' = 4
x'' = 2
3 votes
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BarbaraCTG
Valeu! :)
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Lista de comentários
Δ = b² - 4*a*c
Δ = (-6)² - 4*1*8
Δ = 36 - 32
Δ = 4
(-b +-√Δ)/2*a
(-(-6)+-√4)/2
(6+-2)/2
x' = 6+2/2
x' = 8/2
x' = 4
x'' = 6-2/2
x'' = 4/2
x'' = 2
x' = 4
x'' = 2