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Math help thread

Daco · 6926

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Offline Sharphis

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Reply #75 on: June 02, 2011, 10:58:58 pm
Quote from: CM Daniel on June 02, 2011, 01:44:38 pm
No problem. ;)

Now here's one for you guys, for fun.

(x^2 + 6)^9. Write out it (leaving no more brackets), and yes, you don't need a computer program to do so.


And that makes...

(a+b)9=a9+9a8b+36a7b2+84a6b3+126a4b5+126a3b6+84a2b7+36ab8+9+b9

So....

(x2+6)9=x18+
54x16+216x14+18144x12+163296x10+979776x8+3919104x6+10077696x4+15116544x2+10077696               


Offline CM Daniel

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    • The Corleone Mafia
Reply #76 on: June 03, 2011, 02:41:18 pm
Quote from: Sharphis on June 02, 2011, 10:58:58 pm


And that makes...

(a+b)9=a9+9a8b+36a7b2+84a6b3+126a4b5+126a3b6+84a2b7+36ab8+9+b9

So....

(x2+6)9=x18+
54x16+216x14+18144x12+163296x10+979776x8+3919104x6+10077696x4+15116544x2+10077696             

Correct. :)

Daniel Corleone
Nobel Awards 2007: Best Business Man, Oscar Awards 2008: Best Criminal Group (Corleone Mafia)
www.corleonemafia.com

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