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30 May, 17:40

If x = - 4, calculate 2x squared - 5

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Answers (2)
  1. 30 May, 19:20
    0
    2x (-4) ^-5

    -1/32768

    Wired answer.

    I think is right.
  2. 30 May, 19:28
    0
    You just substitute the value of x in the given equation:

    f (x) = 2x^2 - 5

    f (-4) = 2 (-4) ^2 - 5 = 27

    f (x) : a name given to the equation

    f (-4) : refer to the equation when the value of the independent variable x has the value between the brackets.
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