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Mathematics 8 Online
OpenStudy (anonymous):

combine like terms (-3y^2 -7y -9 ) - 4y^2 +6y +9

OpenStudy (anonymous):

-7y^2 -1y

OpenStudy (anonymous):

wait nvm u gotta multiply them?

OpenStudy (anonymous):

12y^2 -42y - 81 i believe... if u have to multiply the two trinomals

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