SOLUTION: what is (7+2a)(7-2a)

Question 229851: what is (7+2a)(7-2a)
Found 2 solutions by ly12603, rfer:
Answer by ly12603(44) (Show Source): You can put this solution on YOUR website!
49-42a^2
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
49-14a+14a-4a^2
-4a^2+49
or
49-4a^2
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