Binomial Theorem questions
2 published questions with worked solutions.
- Let , , and be the coefficients of x^7, x^5, x^3 and x respectively in the expansion of (x + x^3 - 1 )^5 + (x - x^3 - 1 )^5, x >...
- If _ r=1 ^ 30 r^2(^ 30 C_r)^2 ^ 30 C_ r-1 = 2^ 29 , then is equal to _________.
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