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Question
Factorize each of the following expression:
64 − (a + 1)2
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Solution
\[64 - (a + 1 )^2 \]
\[ = (8 )^2 - (a + 1 )^2 \]
\[ = [8 - (a + 1)][8 + (a + 1)]\]
\[ = (8 - a - 1)(8 + a + 1)\]
\[ = (7 - a)(9 + a)\]
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