I am asked to factor the equation

To my knowledge, your supposed to find pairs of factors that multiply to give -15 and add to give -4, correct?

I can't find a pair that gives both those answers.

I'm stuck.

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- Apr 23rd 2010, 02:31 PMcantstop01Factoring Question
I am asked to factor the equation

To my knowledge, your supposed to find pairs of factors that multiply to give -15 and add to give -4, correct?

I can't find a pair that gives both those answers.

I'm stuck. - Apr 23rd 2010, 02:38 PMskeeter
- Apr 23rd 2010, 02:55 PMcantstop01
Thanks, looks like the answer is and

I would like to ask one more thing.

what is the reasoning behind the factors not actually adding up to -4, yet still being the correct answer? - Apr 23rd 2010, 03:12 PMskeeter