Answers

2015-06-23T15:36:13+05:30
(x/2 - x/3 )²          = x²/4 + x²/9 -  2×(x/2)×(x/3)      (as (a-b)² = a² + b² -2ab)
=  x²/4 + x²/9 - x²/3
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