Square Calculation in tricks

by Ranganathan 2012-10-06 10:14:32

Square Calculation Formulla:


(a)2 = (a + b)2 + (a - b)2 / 2 - b2




Example:


112 = (11 + 9)2 + (11 - 9)2 / 2 - 92

112 = 121

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