2x^2+9x-5 here is the quadratic expression that im trying to factor. Is there a way to factor this easily? im getting confused on the signs.(adsbygoogle = window.adsbygoogle || []).push({});

the book says the factor are: (2x-1)(x+5) but (-1)(2)+5=3

but why not (2x+5)(x-1)? and 5(2)=10-1=9 which looks like the correct answer to me.

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# Factoring a quadratic

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