PRODUTOS NOTÁVEIS

PRODUTOS NOTÁVEIS

8th Grade

14 Qs

quiz-placeholder

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PRODUTOS NOTÁVEIS

PRODUTOS NOTÁVEIS

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

CCSS
HSA.APR.C.4, HSA.APR.A.1, 6.EE.A.3

Standards-aligned

Created by

SIANE GUIDINI

Used 268+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 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 o resultado da expressão abaixo?
(x + 2)(x - 2) + (2 + x)(2 - x)

2x²
8
2x² - 8
0

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Qual a expansão correta de (x - 7)² ?

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

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Qual o resultado da expressão abaixo?
(x - 6)² - (x + 6)²

2x² + 36
-24x
24x
2x² - 36

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Sabendo que a2 + b2 = 97 e ab = 39, qual o valor de (a + b)2?

133

61

178

582

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

a2 + 5b2

a2 + 25b2

a2 - 10ab + 25b2

a2 + 10ab + 25b2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Se (a - b)2 = 16 e a2 + b2 = 106, qual o valor de ab?

15

25

35

45

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