Find the coefficient "a" of the given term in the expansion of the binomial.

Question

Binomial: (2x - 5y)¹⁰

Term: ax⁵y⁵

Answer 1

The coefficient is 32*₁₀C₅, where the C term is the binomial coefficient.

MY ERROR!!!

I forgot the contribution from the 2nd term.

The 2nd term in the binomial gives a factor of 5⁵=3125.

So the answer is 8064*3125...which is "way bigger".

I apologize for my error!