Question

How do you find the coefficient of a of the term ax8y2 in the expansion of the binomial (x−2y)10?

Answer 1

coefficient of ax8y2 in expression (x-2y)10 (or, 10x-20y) =

$\frac{10 \times x - 20 \times y}{a \times x \times 8 \times y \times 2} = \frac{0}{a2}$

May be It can be right ✔