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March 25, 2017

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rationalise 5+2square root 5 divided by square root 5.
please can someone help me on how to get the answer 2+square root 5

  • maths - ,

    (5+2√5)/√5
    multiply top and bottom by √5

    √5(5+2√5)/(√5√5)
    =(5√5 + 10)/5
    = 5(√5+2)/5
    = √5 + 2

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