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Mathematics 9 Online
OpenStudy (anonymous):

25. A refrigerator has a volume given by the trinomial y3 + y2 – 56y. What are the possible dimensions of the refrigerator? Use factoring.

OpenStudy (karatechopper):

set the trinomial to equal zero first

OpenStudy (karatechopper):

so... y3y+y2-56y=0

OpenStudy (karatechopper):

now factor it

OpenStudy (karatechopper):

y(y2+y-56)

OpenStudy (karatechopper):

understand it now?

OpenStudy (anonymous):

yes, thank you

OpenStudy (karatechopper):

no problem:)

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