Fisa portofoliu cl a VII a algebra
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  • Question 1
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    Q.

    Completeaza spatiile incat sa obtineti propozitii adevarate:
    1)Daca ab=-15 \sqrt{ }  2 si ac=3 \sqrt{ }  288,atunci a(b+c) este egala cu:

    answer choices

    7 \sqrt{ }  2

    10 \sqrt{ }  2

    21 \sqrt{ }  2

  • Question 2
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    Q.

    Daca- \sqrt{ }  128+ \sqrt{ } 32- \sqrt{ }  50+ 72\sqrt{ }72   =a 2\sqrt{2}  ,atunci a este egal cu:

    answer choices

    3

    7

    -3

  • Question 3
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    Q.

    Media geometrica a numerelor 5 si 7,2 este:

    answer choices

    2

    3

    4

  • Question 4
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    Q.

    Perimetrul triunghiului de laturi  2\sqrt{2}  +1, 3- 2\sqrt{2}   si 1 este:

    answer choices

    7

     7\sqrt{7}  

    5

  • Question 5
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    Q.

    Modulul numarului 4 196\sqrt{196}  -3 este:

    answer choices

    13

    14

    53

  • Question 6
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    Q.

    Suma inverselor numerelor3 8\sqrt{8}  si2 72\sqrt{72}  este:

    answer choices

     2\sqrt{2}  

     3\sqrt{3}  /8

     2\sqrt{2}  /8

  • Question 7
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    Q.

    Rezultatul calculului |-2 5\sqrt{5}  -4|+ (425)2=\sqrt{\left(4-2\sqrt{5}\right)^2=}  

    answer choices

    10 3\sqrt{3}  

    0

    4 5\sqrt{5}  

  • Question 8
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    Q.

    Daca x=5 48\sqrt{48}  +3 50\sqrt{50}   si y=3 192\sqrt{192}  -2 162\sqrt{162}  

    answer choices

    10 3\sqrt{3}  +2 2\sqrt{2}  

    22 3\sqrt{3}  - 2\sqrt{2}  

    22 3\sqrt{3}  -1,5 2\sqrt{2}  

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