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March 25, 2017

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f(x)=x^​6-​10*​x^​5-​7*​x^​4+​80*​x^​3+​12*​x^​2-​192*​x
how to find the answer an its graph???

  • calculus - ,

    y = x^​6-​10​x^​5-​7​x^​4+​80​x^​3+​12​x^​2-​192​x
    = x(x^​5-​10​x^4-​7​x^3+​80​x^2+​12​x-​192​)

    you know any rational roots will be factors of 192. There appear to be none except x=0.

    If you visit wolframalpha.com and enter the formula, you will find one root near x=10, but that is the only real nonzero root.

    To see what happens near x=0, try visiting

    http://rechneronline.de/function-graphs/

    set the x range -10 to 10
    y -1000 to 1000

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