maths

(√7+√5)(√7-√5)

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asked by aditya
  1. ( a + b ) ( a - b ) = a ^ 2 - b ^ 2


    ( square root 7 + square root 5 ) ( square root 7 - square root 5 ) =

    ( square root 7 ) ^ 2 - ( square root 5 ) ^ 2 = 7 - 5 = 2

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    posted by Bosnian

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