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March 30, 2017

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Simplify
sqrt80 -3 Sqrt63 - sqrt125 - sqrt175

  • Algebra 2 - ,

    √80 = √16√5 = 4√5
    3√63 = 3*√9√7 = 3*3√7 = 9√7
    √125 = √25√5 = 5√5
    √175 = √25√7 = 5√7

    so, you have

    4√5-9√7-5√5-5√7 = -√5 - 14√7

  • Algebra 2 - ,

    √80 - 3√63 - √125 - √175
    =√16√5 - 3√9√7 + √25√5 - √25√7
    = 4√5 - 9√7 + 5√5 - 5√7
    = 9√5 - 14√7

  • Go with Steve - Algebra 2 - ,

    Argghh, messed up a sign
    Steve is right

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