

Equações do Segundo Grau
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dada a equação quadrática 4x² - 3x - 1 = 0, quais são os valores dos coeficientes a, b e c, respectivamente?
a=4, b=3, c=1
a=4, b=-3, c=-1
a=4, b=-3, c=1
a=4, b=3, c=-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor do discriminante (Δ) para a equação 4x² - 3x - 1 = 0?
9
16
25
-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na fórmula de Bhaskara, o que o cálculo do discriminante (Δ) representa?
O valor final de x na equação.
A primeira parte da resolução para encontrar os valores de x.
O coeficiente 'a' da equação.
A raiz quadrada do coeficiente 'b'.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ao resolver a equação do segundo grau 4x² - 3x - 1 = 0, qual é o valor de uma das raízes?
8
1
3/8
5/8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para a equação 4x² - 3x - 1 = 0, qual é o valor da outra raiz, além daquela que é um número inteiro?
-2/8
-1/4
3/8
-5/8
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