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KajKhuji - বীজগনিতের সূত্রাবলী

বীজগনিতের সূত্রাবলী

Category: Math
Posted on: Sunday, September 17, 2017

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  • (α+в)²= α²+2αв+в²
  • (α+в)²= (α-в)²+4αв
  • (α-в)²= α²-2αв+в²
  • (α-в)²= f(α+в)²-4αв
  • α² + в²= (α+в)² – 2αв
  • α² + в²= (α-в)² + 2αв
  • α²-в² =(α + в)(α – в)
  • 2(α² + в²) = (α+ в)² + (α – в)²
  • 4αв = (α + в)² -(α-в)²
  • αв ={(α+в)/ 2}²-{(α-в)/2}²
  • (α + в + ¢)² = α² + в² + ¢² +2 (αв + в¢ +¢α)
  • (α + в)³ = α³ + 3α²в + 3αв² +в³
  • (α + в)³ = α³ + в³ + 3αв(α +в)
  • (α-в)³=α³-3α²в+ 3αв²-в³
  • α³ + в³ = (α + в) (α² -αв + в²)
  • α³ + в³ = (α+ в)³ -3αв(α+ в)
  • α³ -в³ = (α -в) (α² + αв + в²)