Simplificação de frações algébricas

Simplificação de frações algébricas

8th Grade

10 Qs

quiz-placeholder

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Simplificação de frações algébricas

Simplificação de frações algébricas

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

Bianca Oliveira

Used 31+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Simplifique: x²  2x + 1x 1Simplifique:\ \frac{x²\ -\ 2x\ +\ 1}{x\ -1}  

 x + 1x\ +\ 1  

 x  1x\ -\ 1  

 x²  1²x²\ -\ 1²  

 x  2x\ -\ 2  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 3x  2yx +2\frac{3x\ -\ 2y}{x\ +2}  Para quais valores fração é nula?

x = 2

 x1x\ne-1  

 x 2x\ne\ -2  

 x1x\ne1  

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x² 49 x²  14x + 49\frac{x²\ -49\ }{x²\ -\ 14x\ +\ 49}  Através da fatoração, simplifiqu:

 x + 7x\ +\ 7  

 x7x+7\frac{x-7}{x+7}  

 x + 7x  7\frac{x\ +\ 7}{x\ -\ 7}  

 x  7x\ -\ 7  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 18 x5y3z29 x² y³ z\frac{18\ x^5y^3z^2}{9\ x²\ y³\ z}  Simplifique:

 6x³ y z²6x³\ y\ z²  

 2x³yzz\frac{2x³yz}{z}  

 2x³z2x³z  

 3x²yzx\frac{3x²yz}{x}  

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Simplifique: a² + 10a + 25a + 5Simplifique:\ \frac{a²\ +\ 10a\ +\ 25}{a\ +\ 5}  

 a + 5a\ +\ 5  

 a 5a\ -5  

 aa  

 55  

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 Simplifique: 3y  18y  6Simplifique:\ \frac{3y\ -\ 18}{y\ -\ 6}  

 y  3y\ -\ 3  

 3 + y3\ +\ y  

 33  

 66  

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x²  81x + 18 + 81\frac{x²\ -\ 81}{x\ +\ 18\ +\ 81}  

Simplifique:

 x + 9x  9\frac{x\ +\ 9}{x\ -\ 9}  

 x  9x + 9\frac{x\ -\ 9}{x\ +\ 9}  

 x9\frac{x}{9}  

 9x\frac{9}{x}  

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