Given P(x) = x^3 - 3x^2 - 5x

a.evaluate P9x) for each integer value of x from -3 through 5

b. Find all zeros of P(x)

d. Prove that 5 is an upper bound on the zeros of P(x)

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- Apr 23rd 2012, 04:21 PMdoctorbleachersfunction
Given P(x) = x^3 - 3x^2 - 5x

a.evaluate P9x) for each integer value of x from -3 through 5

b. Find all zeros of P(x)

d. Prove that 5 is an upper bound on the zeros of P(x) - Apr 23rd 2012, 05:02 PMemakarovRe: function
a. Do you expect us do this for you?

b. Part (a) gives you one zero; use polynomial long division to get a quadratic equation, which gives you the other two zeros.

c. Estimate the value of square roots from (b). E.g., $\displaystyle \sqrt{29}<\sqrt{36}=6$. - Apr 24th 2012, 05:46 AMHallsofIvyRe: function
Do you not understand that this is integer arithmetic? Can you not multiply, add, and subtract integers?

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b. Find all zeros of P(x)

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d. Prove that 5 is an upper bound on the zeros of P(x)

(What happened to (c)?)