SOLUTION: 18z + 45 + z^2?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: 18z + 45 + z^2?       Log On


   

Question 260624: 18z + 45 + z^2?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
18z + 45 + z^2?
rewrite
z^2 +18z+45=0
z^2+15z+3z+45=0
z(z+15) + 3(z+15) =0
(z+15)(z+3) =0
z=-15 or z= -3
M ananth--------- mananth@hotmail.com