Grade 11Algebra
how many solutions are there of (n^2-n)C2= (n^2-n)C10
how many solutions are there of (n^2-n)C2= (n^2-n)C10
1 Answer
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There are 2 solutions nCr=nC(n-r) so by this we can say that n^2 - n -12=0 this gives (n=4) and (n=-3).
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