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Mathematics 18 Online
OpenStudy (anonymous):

2y^2-5y-7

OpenStudy (mathstudent55):

What do you need to do, factor?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

hero were did you get 14 from

hero (hero):

Sorry, Find two numbers (x and y) that add to get -5, yet multiply to get -14 x + y = -5 xy = -14 In general, find two numbers that add to get b, yet multiply to get ac. a = 2 b = -7

hero (hero):

Typos, typos

OpenStudy (anonymous):

its ok i understand that

hero (hero):

I probably shouldn't have used y as a variable though

OpenStudy (anonymous):

(2y-7)(y+1)

hero (hero):

Did someone give you that answer, or did you find that on your own?

OpenStudy (anonymous):

i did it on my own

hero (hero):

Well, that's why I'm trying to get you to explain to me how you got the answer.

hero (hero):

Did you find the two numbers I was asking about?

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