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Escarlett
@Escarlett
December 2019
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Qual e a resposta de 2xelevado a dois-8+14x=0 em fomula de bhaskara
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DanielS6
Verified answer
2x² - 8 + 14x = 0
a = 2, b = 14, c = - 8
Δ = b² - 4ac
Δ = 14² - 4 . 2 . (- 8)
Δ = 196 + 64
Δ = 260
x = (- b ± √Δ)/2a
x = (- 14 ± √260)/2 . 2
x = (- 14 ± 2√65)/4
x = (- 7 ± √65)/2
x = (- 7 +
√65)/2
x = (- 7 - √65)/2
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Lista de comentários
Verified answer
2x² - 8 + 14x = 0a = 2, b = 14, c = - 8
Δ = b² - 4ac
Δ = 14² - 4 . 2 . (- 8)
Δ = 196 + 64
Δ = 260
x = (- b ± √Δ)/2a
x = (- 14 ± √260)/2 . 2
x = (- 14 ± 2√65)/4
x = (- 7 ± √65)/2
x = (- 7 + √65)/2
x = (- 7 - √65)/2