# SOLUTION: how do you factor 9-c^2d^2

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 Question 442325: how do you factor 9-c^2d^2Found 2 solutions by mananth, swincher4391:Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!9-c^2d^2 (3)^2=(cd)^2 (3+cd)(3-cd) Answer by swincher4391(726)   (Show Source): You can put this solution on YOUR website!Recall, given some (a^2 -b^2), it always factors into (a+b)(a-b). Well this is exactly what you have under your nose. (9-c^2d^2). Would it help if we simplified this to (9-(cd)^2)? Since (cd)^2 = c^2 d^2. Now it is apparent we have two perfect squares. So we can factor it in to Let me know if this is clear! Hope this helped.