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Mathematics 7 Online
OpenStudy (deathslasher99):

Simplify and write answer in standard form: (b - 7)(-3b + 9)

TheSmartOne (thesmartone):

You'll have to FOIL it, or expand it. Do you know how to do that? |dw:1470370300144:dw| http://images.tutorvista.com/cms/images/83/foil-calculator.PNG https://s-media-cache-ak0.pinimg.com/564x/02/e4/5f/02e45f088a06e4b0fb559c5a996e4fb2.jpg some additional images that might help (:

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