
Equações do 2º grau
Authored by Joelma Alves
Mathematics
12th Grade
Used 16+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais são os coeficientes da seguinte equação?
x² - 6x - 2 = 0
a = 1, b = 6 e c = 2
a = 1, b = -6 e c = 2
a = 0, b = -6 e c = -2
a = 1, b = -6 e c = -2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais as soluções da seguinte equação: x² - 9 = 0
S = {3}
S = {-3 ,3}
S = {-3}
S = {0, 3}
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se a equação é do 2º grau então ela terá duas soluções, ou seja duas raízes.
Verdadeiro
Falso
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Quais das seguintes equações do 2º grau a seguir estão incompletas?
x² - 7x + 10 = 0
-x² - 7x = 0
4x² + 4x + 1 = 0
x² - 16 = 0
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual a forma correta de escrever a seguinte equação do 2º grau?
4(x + 5) = x (x - 10)
x² - 14x - 20 = 0
x² - 14x - 20
4x + x² + 20 = 0
Não podemos escrever como uma equação do 2º grau.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais são as soluções da seguinte equação:
x² = 100
S = {100}
S = {10}
S = {-10,10}
Não possui solução
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Uma equação do 2º segundo grau é da forma: ax² + bx +c = 0, onde a nunca pode ser 0.
Verdadeiro
Falso
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