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Rapoarte de numere reale reprezentate prin litere (2)

Authored by Boldea Daniela

Mathematics

8th Grade

Used 3+ times

Rapoarte de numere reale reprezentate prin litere  (2)
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11 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A= {x∈Z |  3x1\frac{3}{x-1}  ∈ Z } este...

{2, 4}

{-2, 0, 2, 4}

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Valorile întregi ale lui x, pentru care fracţia  53x1\frac{-5}{3x-1}  este număr întreg, sunt...


{0, 2}

{-2, 0, 2}

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Numerele întregi x, pentru care fracţia  62x1\frac{6}{2x-1}  este număr întreg, sunt...

{1, 2}

{-1, 0, 1, 2}

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

După simplificare, raportul  R(x)= x2+7x+6x2+2x+1\frac{x^2+7x+6}{x^2+2x+1}  ,   unde x R  {1}\in R\ \ -\left\{-1\right\}  , devine....

 x+6x+1\frac{x+6}{x+1}  

 7x+62x+1\frac{7x+6}{2x+1}  

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Numerele reale a şi b sunt invers proporţionale cu 5 şi 3. Valoarea raportului  3a+b2ba\frac{3a+b}{2b-a}  este....

2

-2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Amplificând cu 2x+1 raportul obținem...

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Media Image

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Amplificând  raportul
 2x33x+1\frac{2x-3}{3x+1}  cu  4x-3, obţinem...

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Media Image

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