
Quiz de Matemática
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Fernanda Monzato
Used 3+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dados os coeficientes a = -6, b = -7 e c = -4, a equação escrita na forma ax² + bx + c com os referidos coeficientes tem forma:
a) -6x² - 7x – 4 = 0
b) -6x² - 7x = 0
c) -6x² - 4 = 0
d) -6x² + 7x + 4 = 0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A equação x² + 3x = 0
a) não tem raízes reais.
b) tem uma raiz zero e outra negativa.
c) tem uma raiz zero e outra positiva.
d) tem duas raízes reais simétricas.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Resolvendo-se a equação: x² - 64 = 0 encontramos como resultados:
a) 0 e 8
b) 8 e -8
c) -8 e 4
d) 0 e 4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Resolvendo-se a equação: x² + 8x = 0 encontramos como resultados:
Resolvendo-se a equação: x² + 8x = 0 encontramos como resultados:
a) 0 e 8
b) 0 e -8
c) – 8 e 4
d) 0 e 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Analisando a equação do segundo grau x² – 2x +1 = 0, podemos afirmar que ela possui:
Analisando a equação do segundo grau x² – 2x +1 = 0, podemos afirmar que ela possui:
a) nenhuma solução real.
b) uma única solução real.
c) três soluções reais.
d) infinitas soluções reais.
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