Wednesday 22 February 2017

FACTORIZE 1C

Factorize 3x2 + 8x - 16.

Solution

= 3x2 + 8x - 16. We split the middle term (8x) to be (12x - 4x).

= 3x2 + 12x - 4x - 16

=  (3x2 + 12x) - (4x + 16) we group by using brackets.

= 3x(x + 4) - 4(x + 4).

= (3x - 4) (x + 4)

Hence 3x2 + 8x - 16= (3x - 4) (x + 4)answer.


TRY THIS…..


Factorize 3x2 - 13x - 16.

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