Question

5z^3 - 2z^4 - 9z^2 + z

Answer 1

-z( 2z^3-5z^2+9z-1)

Explanation:

Apply exponent rule: a^b+c=a^b*a^c

z^2=zz

z^3=z^2*z

z^4=z^3*z

Factor out common term z:

-z(2z^3-5z^2+9z-1)