Mathematics
Factor the polynomial and use the factored form to find the zeros. (Enter your a

### Question Description

P(x) = 2x3 − x2 − 8x + 4

x =

P(x) =

 1 5
(2x4 + 3x3 − 16x − 24)2
x =
P(x) = x4 − 2x3 − 8x + 16
x =

P(x) = x4 − 3x3 + 27x − 81
x =

P(x) = x4 − 3x2 − 4
x =

You probably want to break these into smaller questions, or, better, post them as a single paid question - it's too much work really for a quick question I expect.

As an example, the final one:

P(x) = x4 − 3x2 − 4

= (x^2 + a)(x^2 + b)

[ where ab = -4 and a+b = -3, so a = 1, b = -4 ]

= (x^2 + 1)(x^2 - 4)

x^2 = -1 or x^2 = 4

So x = +/- i or +/- 2 are the zeros.

iainharlow (1041)
University of Maryland
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