Produtos notáveis

Produtos notáveis

8th Grade - University

11 Qs

quiz-placeholder

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Produtos notáveis

Produtos notáveis

Assessment

Quiz

Mathematics

8th Grade - University

Practice Problem

Hard

Created by

Suzana Freitas

Used 36+ times

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual a expansão correta de (x + 3)² ?

x² + 3x + 9
x² + 6x + 9
x² - 6x + 9
x² + 9

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual a expansão correta de (x - 7)² ?

x² - 49
x² + 14x + 49
x² - 14x + 49
x² - 14x - 49

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual é a área de um quadrado cujo lado mede a + 5b ?

a2 + 5b2

a2 + 25b2

a2 - 10ab + 25b2

a2 + 10ab + 25b2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Desenvolvendo algebricamente o produto (x + 5).(x - 5) obtemos

2x

x2

x2 + 25

x2 - 25

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

(2p + q)²

4p² + 2q + q²

p² + 4pq + q

4p² + 4pq + q²

2p² + 2pq + 2q²

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

O valor do produto notável (x + 2y)2 é

x2 + 4xy + 2y2

x2 + 2xy + 2y2

x2 + 4xy + 4y2

x2 - 4xy + 2y2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Quanto vale o produto (40 + 1).(40 - 1)

159

1599

1600

1601

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