## Algebra 2 (1st Edition)

Since the coefficient of the squared term is one, we know that the expression must factor to: $$(z\pm a)(z\pm b)$$ Here, we see that a and b must multiply to get $-54$ and add to get $-3$. Thus, we find that the solution is: $$(z-9)(z+6)$$ Thus, setting each factor equal to zero, we find that the solutions are: $$-6,9$$
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