Equação do segundo grau completa
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Mathematics
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Professional Development
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A equação 2x2 – 4 = 0 é completa, pois a=2, b=0 e c=-4.
Verdadeiro
Falso
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A equação 2x2 +4x – 6 = 0 é completa, pois a, b e c são diferentes de zero.
Verdadeiro
Falso
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
A equação x2 – 5x + 2 = 0 possui os seguintes coeficientes:
a=1, b= -5 e c=2
a=2, b=1 e c=-5
a= 2, b=3 e c= 1
a=1, b=-5 e c=3
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Determine a solução da equação x2 – x – 12 = 0 e marque a alternativa correta.
-4 e 3
-3 e 4
3 e 5
4 e -7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Analisando a equação do segundo grau x² – 2x +1 = 0, podemos afirmar que ela possui:
Observação: calcule o Delta. Se Delta for menor que zero, nenhuma raiz, se for zero uma única solução real e se for Delta maior que zero teremos duas raízes reais diferentes.
nenhuma solução real.
uma única solução real.
duas soluções reais.
três soluções reais.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Dada a equação x² – 2x +1 = 0, sabemos que ela só tem uma raiz real ou seja,
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