
Equação de 2º grau
Authored by Paula Neves
Mathematics
10th Grade
Used 65+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 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
30 sec • 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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O gráfico da equação do 2ºgrau é uma parábola. A curva corta o eixo x nos valores das raizes. Neste gráfico, as raizes são:
-2 e 2
2 e 2
-2 e -2
não existe rais Real
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
O gráfico tem concavidade voltada
para cima
para baixo
para a direita
para a esquerda
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
O grafico da equação do 2º grau chama-se:
Parábola
reta
circulo
tangente
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Os valores dos coeficientes a, b e c são respectivamente:
1;-3;2
0;3;2
1;3;2
-1;-3;-2
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Determine a solução da seguinte equação:
-8x + 4x² + 4=0
∄
S={-1; 1}
S={-1;-1}
S={1 ; 1}
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