Question

factorize by splitting the middle term 4x^2-17x-21

Answer 1

Hey
We have to find two nos. whose product is (-84) and sum is (-17) .
Therefore,
4x^2 + 4x- 21x- 21 = 0
4x (x + 1) -21 (x + 1)
(4x - 21) (x + 1)
therefore
x = 21/4
or x = -1
Hope this helps
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Answer 2

Answer:

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