Simplification of multiple factors

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I was confused on how I am wrong on this question. When I checked by putting in values for $x$, I was correct, and this cannot be factored further.

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Ignore the other submissions other than the last one (my final answer). Is there something I'm doing wrong, or any pointers to go on the correct path? Thanks a bunch!

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There are 2 best solutions below

4
On

I'm in agreement with you. This appears to be a mistake. $2x^2+x+3$ doesn't factor...

1
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Your third answer is totally correct. You can also use polynomial division to show it is $$2x+\frac{48}{x+5}-9$$ perhaps this is the form they require. It could also be that the page you're using is ultra-picky about formatting and you formatted it differently to the given answer