Frações Algébricas

Frações Algébricas

8th Grade

20 Qs

quiz-placeholder

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Frações Algébricas

Frações Algébricas

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

Djalma Júnior

Used 27+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Para que valores de x a fração algébrica  37(x+8)(x7)\frac{37}{\left(x+8\right)\cdot\left(x-7\right)}  não representa um número real ?

 x=8 e x=7x=8\ e\ x=7  

 x=8 e x=7x=-8\ e\ x=-7  

 x=8 e x=+7x=-8\ e\ x=+7  

 x=8 e x=7x=8\ e\ x=-7  

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Qual o valor numérico da fração  37(x+8)(x7)\frac{37}{\left(x+8\right)\cdot\left(x-7\right)}  para  x=5x=5  

 2637\frac{26}{37}  

 2637-\frac{26}{37}  

 3726\frac{37}{26}  

 3726-\frac{37}{26}  

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 35xyz250x3yz\frac{35xyz^2}{50x^3yz}  

Qual é a forma simplificada da fração?

 21z10x2-\frac{21z}{10x^2}  

 7z10x2\frac{7z}{10x^2}  

 21z-21z  

 7z7z  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 a+abaac\frac{a+ab}{a-ac}  

A forma simplificada da fração é

 1+b1c\frac{1+b}{1-c}  

 1+b1+c\frac{1+b}{1+c}  

 bc\frac{b}{c}  

 bc-\frac{b}{c}  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Dados os monômios 25x2y e 100x2yz, o mdc entre eles é

25xy25xy

25x2y25x^2y

100x2y2z100x^2y^2z

100xyz100xyz

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Qual o mmc entre os monômios 12ab, 36a2b2 e 48a3b3 ?

72a3b372a^3b^3

144a2b2144a^2b^2

144a3b3144a^3b^3

288a2b2288a^2b^2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 2x+3y\frac{2}{x}+\frac{3}{y}  

Qual o valor da adição?

 5xy\frac{5}{xy}  

 5x+y\frac{5}{x+y}  

 2y+3xxy\frac{2y+3x}{xy}  

 3y+2xxy\frac{3y+2x}{xy}  

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