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Mathematics 21 Online
OpenStudy (anonymous):

(a + b)(a - 2b)

OpenStudy (anonymous):

Are you available to solve this? I'll help you through it if you're here.

OpenStudy (anonymous):

i got a^3+ b^2?

OpenStudy (anonymous):

I'm afraid you made a little mistake: you didn't distribute correctly.

OpenStudy (anonymous):

crap

OpenStudy (anonymous):

Oh wait.... I might be wrong. One sec.

OpenStudy (anonymous):

Alright, I noticed that we can't have more than a^2. Ready to work on this together?

OpenStudy (anonymous):

ya

OpenStudy (anonymous):

=a^2-2ab+ab-2b^2 =a^2-ab-2b^2

OpenStudy (anonymous):

Awesome. Do you know about "FOIL"?

OpenStudy (anonymous):

yes i do, thanks guys!

OpenStudy (anonymous):

Alright. So tell me what the first two things we multiply are. We're going to solve this here live. :P

OpenStudy (anonymous):

Oh well. Guess we have another quitter. :/

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