Question

Which two values of x are roots of the polynomial below?

x2 - 11x + 15

Answer 1

is there a list of answer choices?

Answer 2

use the quadratic formula

Answer 3

well looking at the problem you'll need the general quadratic formula to find them.

the alternative is to take you choices, substitute the, and see which ones give a zero value..

hope it helps

Answer 4

x^2 -11x +15 = 0

D = 121 -4*15 = 121 -60 = 61

x_1,2 = (11 +/- sqrt61)/2

hope this will help you