Question

Z 3 - 2z 2 + 9z - 18.

Answer 1

Here is your answer:

Combine like terms:

Z+2z=3z

3z-2+9z-18

3z+9z=12z

12z×3-2+-18

Answer 2

group the 1st 2 terms and last 2 terms:

(Z63 -2z^2) + (9z-18)

factor out GCF:

z^2(z-2) + 9(z-2)

now factor the polynomial:

(z-2) (z^2+9)