Monday, 6 October 2014

DIFFERENCE OF 2 SQUARES 1


Evaluate 66572 – 66472

Solution

66572 – 66472 = (6657 + 6647)( 6657 – 6647)

                     = (13304)( 10)

                     = 133040

Hence 66572 – 66472 = 133040.

TRY THIS…………………


evaluate 19552 – 19452

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