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Simplify (5+square Root 5)(5-square Root 5),Can You Help Me?

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    Lets 5 = a
    square root 5 = b

    then (a+b)(a-B) =
    a2 - b2  =
    (5)2 – (square root of 5)2 =
    25-5 = 20
    1 0

    Ramesh7199  

    answered 1 year ago

      (a+b)(a-b) = a2 - b2
      (5+√5)(5-√5) = 52 - (√5)2 = 25 - 5 = 20
      0 0

      Oddman  

      answered 11 months ago

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