Question

what are the solutions of the equation Z ^ 2 - 6z - 27 equals 0

Answer 1

Z^2 - 6z - 27 = 0 you need to factor out firts then solve for z
(z+3 )(z-9) = 0
 z+ 3 = 0 
z = -3  

z-9= 0
z = 9