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Question
Factorise : 1029 - 3x3
Sum
Solution
1029 - 3x3
= 3( 343 - x3 )
= 3( 73 - x3 )
= 3( 7 - x )( 72 + 7x + x2 )
= 3( 7 - x )( 49 + 7x + x2 )
shaalaa.com
Method of Factorisation : the Sum Or Difference of Two Cubes
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