SOLUTION: Factor completely. 5a^2 – 125 thanks

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor completely. 5a^2 – 125 thanks      Log On


   

Question 76592: Factor completely. 5a^2 – 125
thanks
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Factor completely. 5a^2 – 125
:
Factor out 5 and you have:
5(a^2 - 25)
:
Recognize (a^2 - 25) as the difference of squares, so we have:
5 ( a - 5)(a + 5)