Question

factorize :- 2x²-x-21

Answer 1

Answer:

The above mentioned is the answer.

I hope that the answer helps you.

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

$2x^2-x-21\\(by\ splitting \ the \ middle \ term \ method)\\\\2x^2+6x-7x-21\\taken \ 2 \ as \ common \\2x(x+3)-7x-21\\take \ -7 \ as \ common \ in next two terms$

we get

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

take (x+3) as a common term then we get

(2x-7)(x+3)

hence the given expression have to be factorised.

i hope that you understand the above process properly...