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Mathematics 16 Online
OpenStudy (anonymous):

Find the 7th term of the expansion of (3c + 2d)^9

OpenStudy (cwrw238):

use the general form (r + 1)th term of (a + b)^n = nCr a^(n-r) b^r

OpenStudy (cwrw238):

plug in r=6, n = 9, a=3c and b = 2d into the above and you've got it

OpenStudy (anonymous):

Thank you!

OpenStudy (cwrw238):

yw - do u need any more help?

OpenStudy (anonymous):

no i just have to plug everything in

OpenStudy (cwrw238):

ok

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