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4lleh
@4lleh
May 2020
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Com a fórmula de Bhaskara, resolva as seguintes equações:
a) x² - 6x + 9 = 0
b) x² - 15x + 36 = 0
c) x² - 7x + 10 = 0
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Amandau
A)
x² - 6x + 9 = 0
a=1 b= -6 c= 9
Δ = b²-4.a.c
Δ = (-6)²-4.1.9
Δ = 36-36
Δ = 0
x = -b ± √Δ / 2.a
x = - (-6) ± √0 / 2. (1)
x = + 6 ± 0 / 2
x¹ = 6 + 0 / 2
x¹ = 6 / 2
x¹ = 3
x² = 6 - 0 / 2
x² = 6 / 2
x² = 3
S = {3}
1 votes
Thanks 2
IngrydM
A) x= 3
b) x=3 e x=12
c) x=2 e x=5
2 votes
Thanks 1
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a=1 b= -6 c= 9
Δ = b²-4.a.c
Δ = (-6)²-4.1.9
Δ = 36-36
Δ = 0
x = -b ± √Δ / 2.a
x = - (-6) ± √0 / 2. (1)
x = + 6 ± 0 / 2
x¹ = 6 + 0 / 2
x¹ = 6 / 2
x¹ = 3
x² = 6 - 0 / 2
x² = 6 / 2
x² = 3
S = {3}
b) x=3 e x=12
c) x=2 e x=5