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@Megascience
January 2020
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Equação de segundo grau:
A) -8x²+4x+24?
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PauloLuis
Δ = b2
- 4.a.c
Δ = 42
- 4 . -8 . 24
Δ = 16 - 4. -8 . 24
Δ = 784
Há 2 raízes reais.
x = (-b +- √Δ)/2a
x' = (-4 + √784)/2.-8
x'' = (-4 - √784)/2.-8
x' = 24 / -16
x'' = -32 / -16
x' = -1,5
x'' = 2
0 votes
Thanks 2
lararotundaro
Por bhaskara
delta= 4²-4.-8.24
delta=16+768
delta=784
x=-4+-28
-16
x1= -32:-16 x1= 2
x2=24:-16 x2= -1,5
1 votes
Thanks 1
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Lista de comentários
Δ = 42 - 4 . -8 . 24
Δ = 16 - 4. -8 . 24
Δ = 784
Há 2 raízes reais.
x = (-b +- √Δ)/2a
x' = (-4 + √784)/2.-8x'' = (-4 - √784)/2.-8
x' = 24 / -16
x'' = -32 / -16
x' = -1,5
x'' = 2
delta= 4²-4.-8.24
delta=16+768
delta=784
x=-4+-28
-16
x1= -32:-16 x1= 2
x2=24:-16 x2= -1,5