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Mathematics

formule de calcul 2

user
petru scuturici

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5 questions

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  • 1. Multiple-choice
    1 minute
    1 pt

    dezvoltarea binomului

     (x−3)2=\left(x-3\right)^2=  

     x2−6x+9x^2-6x+9  

     x2−9x^2-9  

     x2+9x^2+9  

     x2−6xx^2-6x  
  • 2. Fill-in-the-Blank
    1 minute
    1 pt

    formula

     (a−b)2=a2−2ab+b2 (cu adevarat si fals)\left(a-b\right)^2=a^2-2ab+b^2\ \left(cu\ adevarat\ si\ fals\right)  

  • 3. Multiple-choice
    45 seconds
    1 pt

     (x−4)(x+4)=\left(x-4\right)\left(x+4\right)=  

     2x−82x-8  

     x2−16x^2-16  

     x2−8x^2-8  

     x−4x-4  

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