QUIZ
Operații cu numere reale
mihaelastoica
a year ago
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  • Question 1
    300 seconds
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    Q.

    Rezultatul calculului  36+64\sqrt{36}+\sqrt{64}  este

    answer choices

    100

    10

    14

     14\sqrt{14}  

  • Question 2
    300 seconds
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    Q.

    Rezultatul calculului  9+16\sqrt{9+16}  este

    answer choices

    5

    25

    7

     7\sqrt{7}  

  • Question 3
    300 seconds
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    Q.

    Comparând numerele a=3 5\sqrt{5}  și b=7, obținem

    answer choices

    a >>  b

    a <<  b

    a=b

  • Question 4
    300 seconds
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    Q.

    Rezultatul calculului  520\sqrt{5}\cdot\sqrt{20}  este

    answer choices

    100

    10

    2 5\sqrt{5}  

  • Question 5
    300 seconds
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    Q.

    Rezultatul calculului  150÷6\sqrt{150}\div\sqrt{6}  este

    answer choices

     565\sqrt{6}  

    5

     6\sqrt{6}  

  • Question 6
    300 seconds
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    Q.

    Rezultatul calculului  3263\sqrt{2}\cdot\sqrt{6}  este

    answer choices

    6

     636\sqrt{3}  

    36

     666\sqrt{6}  

  • Question 7
    300 seconds
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    Q.

    Rezultatul calculului  1515÷3515\sqrt{15}\div3\sqrt{5}  

    answer choices

    15

     555\sqrt{5}  

     535\sqrt{3}  

     353\sqrt{5}  

  • Question 8
    300 seconds
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    Q.

    Raționalizând fracția  66\frac{6}{\sqrt{6}}  ,obținem

    answer choices

     6\sqrt{6}  

    1

     66\frac{\sqrt{6}}{6}  

     636\frac{\sqrt{6}}{36}  

  • Question 9
    300 seconds
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    Q.

    Media aritmetică a numerelor  55 si 55\sqrt{5}\ si\ \sqrt{5}  este

    answer choices

    5

     656\sqrt{5}  

     2,5102,5\sqrt{10}  

     353\sqrt{5}  

  • Question 10
    300 seconds
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    Q.

    Media geometrică a numerelor  55 si 55\sqrt{5}\ si\ \sqrt{5}  este

    answer choices

     5\sqrt{5}  

     656\sqrt{5}  

    5

    25

  • Question 11
    900 seconds
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    Q.

    Rezultatul calculului  20245+80\sqrt{20}-2\sqrt{45}+\sqrt{80}  este

    answer choices

     2552\sqrt{55}  

     454\sqrt{5}  

     25-2\sqrt{5}  

    0

  • Question 12
    300 seconds
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    Q.

    Rezultatul calculului  33+33\frac{3}{\sqrt{3}}+\frac{\sqrt{3}}{3}  este

    answer choices

     433\frac{4\sqrt{3}}{3}  

    1

     232\sqrt{3}  

     3+33+\sqrt{3}  

  • Question 13
    300 seconds
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    Q.

    Rezultatul calculului  (22+3)(223)\left(2\sqrt{2}+3\right)\left(2\sqrt{2}-3\right)  

    answer choices

    1

    -1

    5

    -5

  • Question 14
    900 seconds
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    Q.

    Rezultatul calculului  (234)(23+4) +26(56) \left(2\sqrt{3}-4\right)\left(2\sqrt{3}+4\right)\ +2\sqrt{6}\cdot\left(\sqrt{5}-\sqrt{6}\right)^{\ }  

    answer choices

    -6

    -2

     230162\sqrt{30}-16  

     43+2304\sqrt{3}+2\sqrt{30}  

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