SOLUTION: Fully factorise the following expression. (9m^2 - a^2) Can you help me with this one please?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Fully factorise the following expression. (9m^2 - a^2) Can you help me with this one please?      Log On


   

Question 99657: Fully factorise the following expression. (9m^2 - a^2)
Can you help me with this one please?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Factor(ise) the following:
%289m%5E2-a%5E2%29 Here, you have the difference of two squares %283m%29%5E2-%28a%29%5E2 which can be factored thus:
%283m%29%5E2-%28a%29%5E2+=+%283m%2Ba%29%283m-a%29