
PM2 - 9° Ano - 2° Tri
Authored by EVANDRO DE CRISTO
Mathematics
9th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A expressão: 3a2 – 4a + 6ab na forma fatorada é:
3a.(a – 4 + 2b)
3.(a2 - 2a + 2ab)
a.(3a – 4 + 6b)
a².(3 – 4 + 6b)
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Antônio propôs o seguinte desafio ao seu colega: “o quadrado de um número é igual ao seu quádruplo, que número é esse?” A resposta correta do colega seria:
0 e 4
4 e - 4
2 e - 2
0 e 2
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Uma bola foi arremessada, de modo que seu movimento descreve uma trajetória curva determinada pela relação matemática b(x) = – 3x² + 18x, na qual b(x) é a altura alcançada pela bola e x é a distância horizontal percorrida por ela, em metros. A que distância de seu ponto de lançamento essa bola caiu
27
3
6
9
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Qual a forma fatorada para: 12b + ab + 12c + ac?
12b . ac
(12 + c).(a + b)
12b.(a + c)
(12 + a).(b + c)
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Usando a fatoração, determine o conjunto solução da equação: x² – 5x = 0
0 e - 5
0 e 5
5 e - 5
5 e 5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
O quádruplo do quadrado de um número é igual a cem. Que número é esse?
5 e - 5
4 ou - 4
12 e - 12
0 e 5
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Verifique quais dos trinômios dados abaixo são quadrados perfeitos
3x² - 7x + 49
x² - 4x + 9
x² - 8x + 16
16x² - 4x + 1
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