Mathematics

7th -

9thgrade

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FORMULE DE CALCUL PRESCURTAT - 2

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10 questions

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  • 1. Multiple Choice
    2 minutes
    1 pt
    ( x + y )2 =
    x2+2xy+y2
    x2-2xy+y2
    x2+y2
    x2-y2
  • 2. Multiple Choice
    2 minutes
    1 pt
    ( y + 1 )=
    y2-2y+1
    y2+2y+1
    y2+1
    y2-1
  • 3. Multiple Choice
    2 minutes
    1 pt
    ( 5 + a )=
    25+5a+a2
    25-10a+a2
    25+10a+a2
    25-a2
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