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(2+√3) (2-√3) is a ______ number

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(2+√3) (2-√3) is a ______ number

    • Posted by Jasnoor Maan 1 year, 6 months ago

    CBSE > Class 10 > Mathematics
    • 4 answers

    Jigyasa Sen 1 year, 6 months ago

    (2+√3)(2-√3) here we can apply the identity of (a+b)(a-b) = a²-b² So, (2+√3)(2-√3) = (2)²-(√3)² Which means , 4-3 =1 [ here (√3)² = √3×√3 = 3 ] Also,1 is a rational no. as it is in the form of p/q. [ 1/1 ] Hence, (2+√3)(2-√3) is a rational number.

    0Thank You

    Niraj Kumar 1 year, 6 months ago

    Rational number

    0Thank You

    Srijoy Roy 1 year, 6 months ago

    Rational number

    1Thank You

    Rudrakshi Thakur 1 year, 6 months ago

    Ans is 1

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