twice the square root of a number increased by 5 is 23

Discussion in 'Calculator Requests' started by math_celebrity, Oct 26, 2021.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    twice the square root of a number increased by 5 is 23

    The phrase a number means an arbitrary variable, let's call it x:
    x

    The square root of a number means we raise x to the 1/2 power:
    sqrt(x)

    the square root of a number increased by 5 means we add 5 to sqrt(x):
    sqrt(x) + 5

    twice the square root of a number increased by 5 means we multiply sqrt(x) + 5 by 2:
    2(sqrt(x) + 5)

    The phrase is 23 means we set 2(sqrt(x) + 5) equal to 23:
    2(sqrt(x) + 5) = 23
     

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