Asked by Anonymous
find the complex zeros of the polynomial. Write f in factored form: F(x)= 2x^2-5x^3-20x^2+115x-52=0
Answers
Answered by
Reiny
2x^2-5x^3-20x^2+115x-52=0
-5x^3 - 18x^2 + 115x - 52 = 0
5x^3 + 18x^2 - 115x + 52 = 0
no obvious NICE factors
the graph suggests 3 real roots, thus no complex zeros
http://www.wolframalpha.com/input/?i=5x%5E3+%2B+18x%5E2+-+115x+%2B+52+%3D+0
I suspect a typo
-5x^3 - 18x^2 + 115x - 52 = 0
5x^3 + 18x^2 - 115x + 52 = 0
no obvious NICE factors
the graph suggests 3 real roots, thus no complex zeros
http://www.wolframalpha.com/input/?i=5x%5E3+%2B+18x%5E2+-+115x+%2B+52+%3D+0
I suspect a typo
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