°° Let's see -
(3n - 2m) ^2 is equal to (3n - 2m) (3n - 2m) =
9n ^2 - 6mn - 6mn + 4m ^2 =
9n ^2 - 12mn + 4m ^2
So, therefore, choice D) 9n ^2 - 12mn + 4m ^2 is the correct answer. :)
↑ ↑ ↑ Hope this helps! :D
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