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Question
Factorise : a2 ( b + c) - (b + c)3
Sum
Solution
a2 ( b + c) - (b + c)3
= ( b + c )[ a2 - ( b + c )2 ]
= ( b + c )[( a + b + c )( a - b - c )]
= ( b + c )( a + b + c )( a - b - c )
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Method of Factorisation : Difference of Two Squares
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