
Equaçoes do 2 grau
Mathematics
9th Grade
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7 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
x' = 0 e x" = -3
x' = 0 e x" = 3
x' = 3 e x" = -3
x' = x" = 0
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
x' = x" = 5
x' = 0 e x" = 25
x' = 5 e x" = -5
x' = 0 e x" = 5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x' = 0 e x" = - 3/5
x' = 0 e x" = 3/5
x' =0 e x" = 5/3
x' = 0 e x" = - 5/3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x' = 3 e x" = 0
x' = 3 e x" = -3
x' = x" = 3
x' = 0 e x" = 0
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Leia as afirmações:
- o quadrado de um número real positivo x é igual a 81.
- o quíntuplo de um número real positivo y é igual ao seu quadrado.
Qual é o valor da expressão x + y?
-12
13
14
-15
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Quais as soluções para a equação abaixo:
( x + 4 ) . ( x - 3 ) = 0
x' = 0 e x" = -4
x' = 4 e x" = 3
x' = - 4 e x" = 3
x' = 4 e x" = -3
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
x' = 0 e x" = 3
x' = 0 e x" = 9
x'= 0 e x" = 6
x' = 0 e x" = -3
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