
Equações Quadráticas e Lineares
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Easy
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual das seguintes equações é uma equação do primeiro grau?
x² - 5x + 6 = 0
3x + 7 = 10
2x³ - 4 = 0
4x² = 16
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor de x na equação 2x + 9 = 29?
5
10
15
20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na equação x² - x - 42 = 0, quais são os valores dos coeficientes a, b e c, respectivamente?
a=1, b=1, c=42
a=1, b=-1, c=-42
a=0, b=-1, c=-42
a=1, b=-1, c=42
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Usando o método de Soma e Produto para a equação x² - x - 42 = 0, quais são as raízes x1 e x2?
x1 = 6, x2 = -7
x1 = -6, x2 = 7
x1 = 6, x2 = 7
x1 = -6, x2 = -7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o valor do discriminante (Δ) para a equação x² - x - 42 = 0?
169
168
167
166
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