( a + b ) 2 = a 2 + 2 a b + b 2
( a − b ) 2 = a 2 − 2 a b + b 2
( a + b ) 3 = ( a 3 + 3 a 2 b + 3 a b 2 + b 3 )
( a − b ) 3 = ( a 3 − 3 a 2 b + 3 a b 2 − b 3 )
a 2 − b 2 = ( a − b ) ( a + b )
a 3 − b 3 = ( a − b ) ( a 2 + a b + b 2 )
a 3 + b 3 = ( a + b ) ( a 2 − a b + b 2 )
Problem - Basic Level Problem - Inrermediate Level Problem - Advanced Level
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