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OpenStudy (anonymous):
What is the second term in the binomial expansion of (2r – 3s)12?
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OpenStudy (cwrw238):
you could use the following formula (r+1)th term of (a + b)^n = nCr a^(n-r) b^r for the second term r = 1
OpenStudy (cwrw238):
does that help? do you know what nCr means?
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