Thursday, 30 March 2017

FACTORIZING 1


Factorize 81-m2

Solution

We use difference of two squares a2 – b2 = (a - b)(a + b)

81-m2 = 92-m2       

        = (9 - m)(9 + m)

Hence 81 - m2 = (9 - m)(9 + m)


TRY THIS…………….


Factorize 169 - c2



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