Math

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f(x)=7x^3+13x^3-3x^2. Find f(-6)
Also how do you solve this kind of question

  • Math -

    notice that in the place of x in f(x) you now find a -6
    so in the expression , replace x with -6 as well

    f(x) = 7x^3+13x^3-3x^2
    f(-6) = 7(-6)^3 + 13(-6)^3 - 3(-6)^2
    = ...

    I suspect a typo, why would you have two different cubic terms ?

  • Math -

    So for this kind of question. You just replace the variables right?

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