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Mathematics

7th -

8thgrade

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Teza clasa a VII-a sem.II

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18 questions

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  • 1. Multiple Choice
    2 minutes
    1 pt

    Rezultatul calculului: (2√3-1)(2√3+1) -(-2)3

    27

    3

    19

    5

  • 2. Multiple Choice
    5 minutes
    1 pt

    Rezultatul calculului: (2x+1)2 - (x-2)2 -3x(x+3)

    x-3

    -x+3

    -x-3

    -9x+5

  • 3. Multiple Choice
    2 minutes
    1 pt

    Descompus in factori (2x-3)2 -4(x+1)2

    5(1-4x)

    1-4x

    5(4x-1)

    4x-1

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