Question

factorize -z2 - 4z -12​

Answer 1

Answer:

(z-6) (z+2)

Step-by-step explanation:

z^2 - 4z -12​

in working column

sum= - 4z

      = ( +2z)+(-6z)

product = -12z^2

             = (+2z)*(-6z)

= z^2 - 6z + 2z -12​

= z( z-6) + 2(z-6)

=(z-6) (z+2)