Friday, 14 February 2014

FACTORIZATION C7

Factorize m2n2 - 49.

Solution

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

m2n2 - 49 = (mn)2 - (7)2

              = (mn - 7)( mn + 7)


Hence m2n2 - 49 = (mn - 7)( mn + 7)


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

Factorize s2t- 121.

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