Revisão - Equação do 2º grau
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
Ferdinando Lobo
Used 5+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Sobre a equação do 2º grau (x-2)²=3x+1 podemos afirmar que:
a=1, b=7 e c=3
a=1, b=-7 e c=3
a=1, b=-3 e c=3
a=1, b=-5 e c=4
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Toda equação do 2º grau possui 2 raízes reais.
Verdadeiro
Falso
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
As raízes da equação 3x²-5x=0 são:
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
As soluções da equação 2x²-50=0 são:
x = ±25
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
O quadrado de um número é igual seu dobro mais oito. Estes números podem ser:
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Para que a equação x²+6x-k=0, na incógnita x, não tenha raízes reais devemos ter que:
k < -11
k < -9
k > -9
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A soma e o produto das raízes da equação 2x²=7x-5 são:
Soma: -7/2, Produto: -5/2
Soma: 7/2, Produto: 5/2
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