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March 26, 2017

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simplify: 5 / sqrt (7) - sqrt(2)

a) sqrt (7) - sqrt (2)
b) sqrt(7) + sqrt (2)
c) 5 sqrt((7) + sqrt (2))/ 9
d) 1

  • algerba - ,

    The way you typed it, none of these answers are correct,
    BUT
    if you mean
    5/(√7 - √2) then

    5/(√7 - √2)
    =5/(√7 - √2) * (√7+√2)/(√7+√™)
    = (5√7 + 5√2)/5
    = √7 + √2

  • algerba - ,

    im truly sorry because i cant get how to write these square root correctly. but yes that what i meant the way yo wrote it and thanks so much for your help reiny. :)

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