
Fatoração A - 9º Ano
Authored by Aramis Leite
Mathematics
9th Grade
Used 6+ times

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6 questions
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1.
MULTIPLE SELECT QUESTION
10 mins • 1 pt
Entre os 4 trinômios dados, há 2 que são quadrados perfeitos. Assinale quais são (mais de uma alternativa)
x² + 16𝑥 + 64
4𝑥² + 6𝑥𝑦 − 8y
16𝑥² + 8𝑥𝑦 + 2𝑦²
9𝑥² + 12𝑥𝑦 + 4𝑦²
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Durante a resolução de um problema de Matemática, o professor realizou a seguinte fatoração:
x² – 4 = (x + 2)(x – 2)
Esse caso de fatoração é conhecido como
trinômio quadrado perfeito.
diferença de dois cubos.
diferença de dois quadrados.
fatoração por agrupamento.
fator comum em evidência.
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
2x
x + 5
2(x - 5)
(x + 5)²
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Sobre a fatoração de polinômios, marque a alternativa INCORRETA.
x² − y² = (x + y)(x – y)
x² + 4x + 4 = (x + 2)²
ax + bx + cx = x(a + b + c)
x² − 5x − 25 = (x − 5)²
x³ + 8 = (x + 2)(x² – 2x + 4)
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
x + y
x - y
x² - y²
(x - y)²
(x + y)²
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Analisando o polinômio x² - 10x + 25, podemos afirmar que sua forma fatorada corresponde a: (x + 5)²
Verdadeiro
Falso
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