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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