trig

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Describe the possible values of variable a such that (/72) + (/a) can be simplified to a single term.
Note: (/a) is the square root of a.

  • trig -

    √72 + √a
    = 6√2 + √a

    so, if a is of the form 2n^2

    6√2 + √2n^2 = (6+√n^2)√2 = (6+n)√2

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