
REVISÃO - EQ. 2°GRAU + PROBABILIDADE (VA)
Authored by Felipe Dias
Education
10th Grade
Used 51+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Resolva a equação do 2°grau:
2x² - 50 = 0
V={-2, +2}
V={-10, +10}
V={-2, +2}
V={-5, +5}
Answer explanation
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Resolva a equação 6x² - 24x = 0:
V={0, 4}
V={-4, +4}
V={0, 6}
V={0, 2}
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Resolva a equação:
2x² - 12x = x² + 10x
V={-12, 0}
V={10, 12}
V={0, 10}
V={0, 22}
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Resolva a equação 2x² - 7x + 3 = 0:
V={-2, 5}
V={1/2, 3}
V={1/3, 3}
V={0, 1}
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Rwsolva a equação 4x² - 49 = 0:
V={3,5; -3,5}
V={7; -7}
V={4; -4}
V={0; 49}
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Para a equação x² - 10x + 21 = 0, indique os coeficientes:
a = -1 b = 10 c = 21
a = 1 b = -10 c = 21
a = x² b = 10 c = 21
a = 1 b = -10 c = 0
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pensando de números de 1 a 100. Qual a probabilidade escolher um número com dois algarismos iguais?
9/100
10/100
9/10
99/100
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