Monday, 19 September 2016

FACTORIZATION 1



Factorize 2x2 - x - 15

Solution

= 2x2 - x – 15.  We split the middle term (-x) to be (-6x + 5x).

= 2x2 - 6x + 5x – 15                (-x) = -6x + 5x.

= (2x2 -6x) + (5x - 15)

= 2x(x - 3) + 5(x - 3)

= (2x + 5) (x -3)

Hence 2x2 - x – 20 = (2x + 5) (x - 4) answer.

TRY THIS…..


Factorize 3x2 - 8x – 35.

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