SOLUTION: can someone help factor 25a(square)-4?

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Question 303442: can someone help factor 25a(square)-4?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
25a(square)-4?
using identities a^2-b^2=(a+b)(a-b)
(5a+2)(5a-2)