Question

Find the middle term(s) in the expansion of (x - 1/2y)¹⁰

Answer 1

Here, a = x, b = -1/2y, n =10.

Now, n is even.

\(\therefore\) \(\frac{n+2}2=\frac{10+2}2=6\)

\(\therefore\) Middle term is t_6, for which r = 5