P(x)=x^3−2x^2−9x+4
a. what are the real zeros?

Question

P(x)=x^3−2x^2−9x+4
a. what are the real zeros?

turingtest · Answer

do you know the rational root theorem?

anonymous · Answer

a x^n +...........+ c then rrt above says possible rational roots are plus minus integer factors of c/a, in this case 4/1 so possibles are plus minus 1/1, 2/1 or 4/1.
If you get lucky and this turns up a root, then you just have a quadratic to solve.

anonymous · Answer

no what is it?

anonymous · Answer

no, what is what?

anonymous · Answer

rational root therom

turingtest · Answer

@estudier just described it, read their explanation carefully

anonymous · Answer

i get everything but the end abaout the quadratic formula

turingtest · Answer

we cross that bridge after you first find a root using the rational root theorem (RRT)
so using the possible roots described by RRT have you found one yet?

anonymous · Answer

answer?

turingtest · Answer

?

turingtest · Answer

what are the possible real roots of the equation?

turingtest · Answer

name them please...