Question

if 3 and -3 are two zeros of polynomial x⁴+x³-11x²-9x+18 find all the zeros of the given polynomial. Please someone help​

Answer 1

Step-by-step explanation:

divide x^4+x^3-11x^2-9x+18 by (x^2-9)

x^2-9=(x-3)(x+3)

on division we get x^2+x-2

x^2+2x-x-2

x(x+2)-1(x+2)

(x-1)(x+2)

zeros are 1,-2

all zeros are 3,-3,1,-2