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