# Expressions

Expression (3a-7).(3a+7) is identical with:

« Correct result #### Solution:

$\left(3a-7\right)\mathrm{.}\left(3a+7\right)=9{a}^{2}-49$ We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you! ## Next similar math problems:

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