
preparação para o teste - 8º ano
Quiz
•
Mathematics
•
8th Grade - Professional Development
•
Practice Problem
•
Hard
Ana Gonçalves
Used 8+ times
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20 questions
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1.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
Quais das seguintes equações do 2º grau são incompletas? (não te esqueças de as escrever primeiro na forma reduzida)
x² - 7x + 10 = 0
4x² - 4x = 1
– x² – 7x = 0
x² - 16 =0
x² + 2x + 7= 2x
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O conjunto solução da equação é:
{4 ,7}
{-2 , 7}
{-7 , 2}
{0}
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual o conjunto solução da equação ?
{2; 3}
{-2; -3}
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Que tipo de fatorização foi usada na resolução da figura?
Colocar o fator comum em evidência
Usando os casos notáveis
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
As soluções da equação do 2° grau 3x2 + 27 = 0, são
-3 e 3
-9 e 9
A equação não tem solução
3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Qual é o desenvolvimento do quadrado do binómio (x - 7)² ?
x² - 49
x² + 14x + 49
x² - 14x + 49
x² - 14x - 49
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual é o desenvolvimento do produto (2n-1)(2n+1)?
4n2-1
4n2+1
4n2-4n+1
4n
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