
Avaliação - equações do 2º grau
Authored by FERNANDA SILVA
Mathematics
Used 3+ times

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20 questions
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1.
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
2.
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
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais os coeficientes?
a = 6
b = 2
c = 1
a=9
b= - 6
c = 1
a= 9
b= 6
c= 1
a= 2
b= 6
c= 1
4.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Quais das equações do 2º grau a seguir, são incompletas? (forma reduzida)
x² - 7x + 10 = 0
4x² - 4x + 1 = 0
– x² – 7x = 0
x² - 16 = 0
x² + 2x + 7= 2x + 7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qual das equações abaixo é do segundo grau?
x² + 3x - 1 = x² + 10
0x² + 4x – 3 = 0
x + x + 6 = 0
x · (x - 5) = 0
2x³ - 8x² - 2 = 0
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A solução da equação x² = 100, é:
50 e - 50
0 e 10
Não tem raízes reais
0 e - 10
10 e - 10
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A solução da equação x² + 9 = 0, é:
9 e - 9
3 e - 3
Não tem raízes reais
81 e - 81
0 e - 3
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