Solve the equation by factoring. z2 - 6z - 27 = 0

The answer is x = 9 and - 3

You must fine 2 number that multiply to equal - 27 and add to equal - 6

(x-9) (x+3)

Then equal the parts of the binomial to zero

x - 9 = 0

x + 3 = 0

You must get x by its self.

When you do so, you'll have the answer as - 3 and 9