The Student Room Group

Can someone please factorise this?

2x^2+x-351=0

Thank you
2x(-351)=-702
Square root of 702 is roughly 26.4 so you know 2 numbers near 26 multiply to give 702.
26x27=702
-26x27=-702 and -26+27=1 (this for the +X)
-26/2=-13
And so (2x+27)(x-13)
Yes I realised that but now they've seen how to approach such a question they can try to answer similar examples

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