Functions

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If f(x)=2x^4-9x^3+6x-5, then use synthetic division to find f(6)

What is synthetic division? How do I solve this?

  • Functions -

    Hmmmm. I don't see how synthetic division can help on this. f(6) is just plug in 6 for x and grind.

    Synthetic division helps dividing polynomials, which is not here .

  • Functions -

    6 รขโ€โ€š 2 -9 0 6 -5
    ...--------------
    ......12 18 108684
    ....2 3 18 114 679

    It is so hard to line things up properly,
    in the last two rows, the 3 is under the 12, 18's line up, 108 and 104 line up.

    the answer is the last number, namely 679

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