SOLUTION: Factor completely. Show all work necessary. 9x^2 + 53x + 40

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor completely. Show all work necessary. 9x^2 + 53x + 40       Log On


   

Question 326044: Factor completely. Show all work necessary.
9x^2 + 53x + 40

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Factor completely. Show all work necessary.
9x^2 + 53x + 40
---
I graphed it and found a zero at x = -5
---
So x+5 is a factor.
---
(x+5)(9x+8) = 0
x = -5 or x = -8/9
===============================
Cheers,
Stan H.