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Mazyrski [523]
3 years ago
7

Which of the following represents the zeros of f(x) = 6x^3-31x^2+4x+5

Mathematics
2 answers:
Ira Lisetskai [31]3 years ago
8 0
To do these types of problems fast, I highly recommend you learn synthetic division-it helped me so much in Algebra II class.
It is kind of hard to explain on here, so I recommend searching synthetic division on you tube.
Anyway, by doing that you get (x-5) as a zero and are left with 6x^2 -x -1, which you can plug in the quadratic formula, and you get x= -1/3 and x=1/2

Hope, this tip helps you get started, but if not another tip would be (although it takes much more time) to just start dividing the polynomial by numbers like: x= (+/-) 6,1,2,3,5 because these numbers are factors of 5 or 6.
dusya [7]3 years ago
8 0

The answer is 5,-1/3,1/2. Hope this helps:)

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