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Casos Notáveis da Multiplicação

Authored by Isabel Oliveira

Mathematics

9th Grade

Casos Notáveis da Multiplicação
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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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