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Question
Factorize each of the following expression:
36l2 − (m + n)2
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Solution
\[36 l^2 - (m + n )^2 \]
\[ = (6l )^2 - (m + n )^2 \]
\[ = [6l - (m + n)][6l + (m + n)]\]
\[ = (6l - m - n)(6l + m + n)\]
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