SOLUTION: Factor the expressions completely. x^2-9 x^2+6x+9 5x^2+16x+3

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Factor the expressions completely. x^2-9 x^2+6x+9 5x^2+16x+3      Log On


   

Question 450007: Factor the expressions completely.
x^2-9
x^2+6x+9
5x^2+16x+3
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

x^2-9 = (x-3)(x+3)

x^2+6x+9 = (x+3)(x+3)

5x^2+16x+3 = (5x +1)(x+3)

Check the factoring for correctness by using FOIL

F	First terms

O	Outside terms

I	Inside terms

L	Last terms