Tuesday 4 March 2014

DIFFERENCE OF 2 SQUARES C1

Evaluate 12142 – 7862

Solution

12142 – 7862= (1214 + 786)(1214 – 786)

                     = (2000)( 428)

                     = 856000


Hence 12142 – 7862 = 146000

TRY THIS.............

Evaluate 8212 – 1792


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