Factorize:

2x2 + 11x – 21

We have,



Now by using middle-term splitting, we get


= 2x2 + 14x - 3x - 21


= 2x (x + 7) - 3 (x + 7)


= (x + 7) (2x - 3)


Hence,


The given expression can be factorized as:



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