
Equação do 2º Grau
Authored by DEBORA VALERIO
Mathematics
9th Grade
Used 35+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual das seguintes equações é do segundo grau?
x² + 3x - 1 = x² + 10
x + x + 6 = 0
0x² + 4x – 3 = 0
2x³ - 8x² - 2 = 0
x · (x - 5) = 0
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais os coeficientes da equação x² - 7 = 0?
a = 1, b = 0 e c = 7
a = 1, b = 0 e c = - 7
a = 1, b = 7 e c = 0
a = 0, b = - 7 e c = 0
a = 1, b = - 7 e c = 0
3.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Quais das equações do 2º grau a seguir, são incompletas? (forma reduzida)
4x² - 4x + 1 = 0
– x² – 7x = 0
x² - 7x + 10 = 0
x² - 16 = 0
x² + 2x + 7= 2x + 7
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
A equação reduzida do 2º grau corresponde a: 2x² - 8x - 4 = 3x - x²
x² - 5x - 4=0
3x² - 5x - 4 = 0
13x² - 4=0
x² - 5x - 4=0
3x² - 11x - 4=0
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
As soluções da equação x² = 100, são:
10 e - 10
0 e - 10
Não tem raízes reais
50 e - 50
0 e 10
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
As soluções da equação 4x² - 36 = 0, são:
3 e - 3
Não tem raízes reais
9 e - 9
8 e - 8
20 e - 20
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
As soluções da equação x² + 9 = 0, são:
9 e - 9
3 e - 3
Não tem raízes reais
81 e - 81
0 e - 3
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