Thursday, 3 August 2017

DIFF OF 2 SQUARES 1


Evaluate 18822 – 11182

Solution

We apply difference of two squares: a2 - b2 = (a-b)(a+b).

18822 – 11182= (1882 + 1118)( 1882 - 1118)

                      = (3000)( 628)

                      = 1884000

Hence 18822 – 11182= 1884000


TRY THIS……………………


Evaluate 15442 – 14562

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