
Equações
Authored by Katia Fernanda
Mathematics
9th Grade
Used 16+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual a condição para que uma equação do 2º grau não possua solução?
Δ > 0
Δ < 0
Δ = 0
Δ ≠ 0
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual é o valor de Delta na equação abaixo?
∆ = 0
∆ < 0
∆ > 0
Inexistente
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Beatriz tem dois irmãos. As raízes da equação abaixo representam as idades de seus irmãos. Quantos anos eles tem?
4 e 5 anos
5 e 6 anos
5 e 11 anos
2 e 7 anos
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Para determinar o valor do discriminante Delta utilizamos qual fórmula?
∆ = - b² + 4a
∆ = b² - 4ac
∆ = - b + 4ac
∆ = - b - 4ac
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Para calcular a soma das raízes utilizamos:
soma das raízes =
soma das raízes =
soma das raízes =
soma das raízes =
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Para determinar as raízes da equação utilizamos a fórmula de Bhaskara, que é representada por:
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual a condição para que uma equação do 2º grau possua duas raízes diferentes ?
Δ > 0
Δ < 0
Δ = 0
Δ ≠ 0
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