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Mathematics
10th Grade
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20 questions
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1.
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
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A equação reduzida do 2º grau coresponde a:
3x² - 11x - 4=0
x² - 5x - 4=0
13x² - 4=0
x² - 5x - 4=0
3x² - 5x - 4 = 0
3.
MULTIPLE CHOICE QUESTION
1 min • 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
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A equação que representa a área do retângulo é:
4x² = 256
4x = 256
5x = 256
4x² + 256 = 0
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Classifique as afirmações em V (verdadeira) ou F (falsa)
I. Se o discriminante da equação é igual a zero, ela tem duas raízes reais e iguais. ( )
II. Se o discriminante da equação é menor que zero, ela tem duas raízes reais diferentes. ( )
III. Se o discriminante da equação é maior que zero, ela tem duas raízes reais e diferentes. ( )
IV. Se o discriminante da equação é igual a zero, ela não tem raízes reais. ( )
V - V - V - F
V - F - V - F
V - V - F - F
F - V - F - V
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Qual é a fórmula de Bhaskara para resolver equações quadráticas?
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