
Casos Notáveis da Multiplicação
Authored by Isabel Oliveira
Mathematics
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Qual é o produto notável de (a + b)²?
a² + 2ab + b²
a² + 2b²
2a + 2b
a² + b²
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Calcule o valor de (3x + 2)² usando a fórmula do quadrado.
9x² + 12x + 4
9x² + 8x + 4
3x² + 4x + 2
6x² + 4x + 1
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Multiplique os binómios (x + 5) e (x - 3).
x^2 + 2x + 15
x^2 + 8x - 15
x^2 - 2x - 15
x^2 + 2x - 15
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Qual é o resultado de (2a + 4)(2a - 4)?
8a² - 16
2a² - 8
4a² + 16
4a² - 16
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Simplifique a expressão (x² - 9) usando produtos notáveis.
(x - 3)(x + 3)
(x - 9)(x + 1)
(x - 3)(x - 3)
(x + 3)(x + 3)
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Identifique o produto notável em (x + 7)² - (x - 7)².
14x
x² + 49
7x
28x
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Simplifique a expressão algébrica 2(x + 3) + 4(x - 1).
6x + 2
2x + 10
4x + 12
8x - 2
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