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Mathematics 17 Online
OpenStudy (anonymous):

factor 25y^3-160y^2-105y

OpenStudy (mathstudent55):

First factor out 5y out of everything

OpenStudy (anonymous):

Start by factoring out 5y

OpenStudy (anonymous):

And then factoring (5y^2-32y-21)

OpenStudy (anonymous):

ok 5(5y^3-32y^2-105y)

OpenStudy (anonymous):

oh

OpenStudy (anonymous):

now what?

OpenStudy (anonymous):

5*21=105 now factor these?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

ok nothing comes out ?

OpenStudy (anonymous):

-35+3

OpenStudy (anonymous):

5(y-7)(5y-3)

OpenStudy (mathstudent55):

5y(5y^2 - 32y - 21) 5y(5y + 3)(y - 7)

OpenStudy (anonymous):

5y(5y + 3)(y - 7) would be correct.

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