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Mathematics 15 Online
OpenStudy (anonymous):

Which is not a factor of 2x^2-2x-4? a.2 b.x-2 c.x-1 d.x+1

OpenStudy (anonymous):

c

OpenStudy (istim):

Why not you factor it first?

OpenStudy (anonymous):

idk how

OpenStudy (istim):

Well, factor out 2 from the equation first. Then, find two numbers that multiply to the third number, and add to the middle number.

OpenStudy (anonymous):

2(x^2-x-2) = 2[(x-2)(x+1)] so c. X-1 is not the answer

OpenStudy (anonymous):

so what is?

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