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Thaynasjuahs
@Thaynasjuahs
November 2019
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Resolva as questões
A) 2x-10=0
B)x²- 4x+3=0
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MatheusFeron
A) 2x-10=0
2x = 10
x = 10/2
x = 5
B)x²- 4x+3=0
Utilizando Bhaskara:
x² - 4x + 3 = 0
x = -b +-
------------------------------
2a
Δ = b² - 4ac = 16 - 4*1*3 = 16 - 12 = 4
x = 4 +-
------------------------------
2
x = 4 +- 2
-------
2
x = 1 e x = 3
0 votes
Thanks 1
stefanidiaz99
A) 2x-10=0
2x=10
x=10/2
x=5
Resposta: 5
B) x²-4x+3=0 formula de bhaskara
a=1
b=-4
c=3
delta= raiz de b² - 4.a.c
-4² - 4.1.3
16 - 12
4 - raiz de 4? 2
delta=2
-b +- delta/2.a
-(-4) +- 2/2.1
4 +- 2/2
1) 4+2/2
6/2 = 3
2) 4-2/2
2/2= 2
Resposta: 3,2
0 votes
Thanks 1
stefanidiaz99
Opa, 2/2 igual a 1
stefanidiaz99
Resposta da B: 3,1
Thaynasjuahs
obrigada ❤
stefanidiaz99
merece <3
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Lista de comentários
2x = 10
x = 10/2
x = 5
B)x²- 4x+3=0
Utilizando Bhaskara:
x² - 4x + 3 = 0
x = -b +-
------------------------------
2a
Δ = b² - 4ac = 16 - 4*1*3 = 16 - 12 = 4
x = 4 +-
------------------------------
2
x = 4 +- 2
-------
2
x = 1 e x = 3
2x=10
x=10/2
x=5
Resposta: 5
B) x²-4x+3=0 formula de bhaskara
a=1
b=-4
c=3
delta= raiz de b² - 4.a.c
-4² - 4.1.3
16 - 12
4 - raiz de 4? 2
delta=2
-b +- delta/2.a
-(-4) +- 2/2.1
4 +- 2/2
1) 4+2/2
6/2 = 3
2) 4-2/2
2/2= 2
Resposta: 3,2