Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 month ago

Algebra 2 question?

Table of +1-1i zeros

x^4-3x^3+5x^2-2x+5

Update:

descartes rule of signs table (positive, negative, imaginary, and total

3 Answers

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  • 1 month ago

    f(x)=x^4-3x^3+5x^2-2x+5=0 has 4 non real zeros which are

    x=-0.1386212+/-1.002153 i

    x=1.638621+/-1.483234 i

    highly approximate. You may check it out.

    Descartes rule of signs=>

    f(+)=+-+-+ has at most 4 +ve real zeros

    f(-)=+++++ has at most 0 -ve real zeros

    In fact, f(x)=0 has no real zero.

    x=1-i is not a zero. What do you mean by posting it?

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  • ted s
    Lv 7
    1 month ago

    at most 2 positives , no negatives...thus at least 2 complex......{ all are complex }

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  • ?
    Lv 7
    1 month ago

    What exactly is your question???

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