Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.

f(x) = 2x3 + 8x2 + 7x - 8

A. Yes

B. No

Question

Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.

f(x) = 2x3 + 8x2 + 7x - 8

A. Yes

B. No

zehanz · Answer

The possible answers do not make sense to me.

RZT: All possible numbers of the form c/d, where c and d are integers. c must divide evenly into the constant term -8. d must divide evenly into the leading coefficient 2.

mathstudent55 · Answer

p is a factor of 8 and q is a factor of 2
p can be +-1, +-2, +-4, +-8
q can be +-1, +-2
All possibilities are all combinations of p/q

raden · Answer

this, cant be factored http://www.wolframalpha.com/input/?i=2x^3%2B8x^2%2B7x-8%3D0

zehanz · Answer

Using WA instead of the RZT seems not a good idea to me. It is required to give a list of POSSIBLE rational zeroes. Whether or not the formula can be factored is irrelevant.