Monday 22 February 2016

FACTORIZATION - 8


Factorize completely ca + cr - ar - a2.  

Solution

= ca + cr - ar - a2.

= (ca + cr) – (ar - a2).      [Grouping the factors]

= c(a + r) - a(r + a).

 = (a + r)(c - a).

  Hence ca + cr - ar - a2. =  (a + r)((c - a).   

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

NECTA 1995 QN. 20a

Factorize completely pq + pr - rq - q2.   

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