Question

Write the indicated term of the binomial expansion.
(x - 2y)^10; 8th term

Answer 1

= 10C8 (x)^8 (-2y)^2

Answer 2

= 180 x^8 y^2

Answer 3

\[-15360 x^3 y^7\]
This is the eighth term from the left where the first term is\[x^{10} \]

Answer 4

\[-15360 x^3 y^7\]
This is the eighth term from the left where the first term is\[x^{10} \]

Answer 5

and the first 1 is from the right where the 1st term is ... ?

Answer 6

The first term on the right is:\[+1024 y^{10} \]Counting from right to left the eighth term is:\[-960 x^7 y^3 \]