Question

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

Answer 1

do you know the rational root theorem?

Answer 2

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.

Answer 3

no what is it?

Answer 4

no, what is what?

Answer 5

rational root therom

Answer 6

@estudier just described it, read their explanation carefully

Answer 7

i get everything but the end abaout the quadratic formula

Answer 8

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?

Answer 9

answer?

Answer 10

?

Answer 11

what are the possible real roots of the equation?

Answer 12

name them please...