Основное свойство алгебраической дроби

Основное свойство алгебраической дроби

7th Grade

6 Qs

quiz-placeholder

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Основное свойство алгебраической дроби

Основное свойство алгебраической дроби

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Татьяна Тищенко

Used 30+ times

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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Сократите дробь  15a3b2(3ab)2\frac{15a^3b^2}{\left(-3ab\right)^2}  

 x3y2\frac{x-3y}{2}  

 5a3\frac{5a}{3}  

-5a

 5а2b-5а^2b  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Сократите дробь:  х29у22х+6у\frac{х^2-9у^2}{2х+6у}  

 х3у2\frac{х-3у}{2}  

х-3у

 х+3у3\frac{х+3у}{3}  

 х3у2+2у\frac{х-3у}{2+2у}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Приведите дробь  72а\frac{7}{2а}   к знаменателю  10а2b10а^2b  

 7ab10a2b\frac{7ab}{10a^2b}  

 5ab10a2b\frac{5ab}{10a^2b}  

 7a2b10a2b\frac{7a^2b}{10a^2b}  

 35ab10a2b\frac{35ab}{10a^2b}  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Приведите дробь   aa+b\frac{a}{a+b}  к знаменателю  a2+2ab+b2a^2+2ab+b^2   

 a2ab(a+b)2\frac{a^2-ab}{\left(a+b\right)2}  

 a2+ab(a+b)2\frac{a^2+ab}{\left(a+b\right)^2}  

 aa2+2ab+b\frac{a}{a^2+2ab+b}  

 aba2a2+2ab+b2\frac{ab-a^2}{a^2+2ab+b^2}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 х2+2хух24у2\frac{х^2+2ху}{х^2-4у^2}  Сократите дробь:

 х2у\frac{х}{2у}  

 хх+2у\frac{х}{х+2у}  

 хх2у\frac{х}{х-2у}  

 12у\frac{1}{2у}  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Сократите дробь:  х216(4х)2\frac{х^2-16}{\left(4-х\right)^2}  

 х+4х4\frac{х+4}{х-4}  

 х4х+4\frac{х-4}{х+4}  

 4+х4х\frac{4+х}{4-х}  

 4х4+х\frac{4-х}{4+х}