
Equação 2º grau
Authored by Marilia Regina
Mathematics
9th Grade
Used 5+ times

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5 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Utilizando a fórmula de Bhaskara, sobre a equação: 4x2 + 8x + 6 = 0 podemos afirmar:
Δ < 0, a equação não possui raiz real.
A equação tem duas raízes reais: – 1 e 5.
Δ > 0, a equação tem duas raízes reais
Δ = 0, a equação terá uma raiz real.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Encontre as raízes da equação: x2 – 4x – 5 = 0
– 1 e - 5.
– 2 e 5.
– 1 e 5.
1 e -5.
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quais os coeficientes da equação 5x2 - x - 2 = 0?
a=1 b=1 c= 2
a=5 b=-1 c= -2
a=5 b=1 c= -2
a=5 b=1 c= 2
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Analisando a equação do segundo grau x² – 2x +1 = 0, podemos afirmar que ela possui:
nenhuma solução real.
uma única solução real.
duas soluções reais.
três soluções reais.
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Considerando a equação 10x2 – 1000 = 0, duas raízes reais e distintas, a e b, podem ser encontradas. Determine a2 + b2.
50
100
200
250
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