Question

Calculate the coefficient of x2y6 in the expansion of (x + y)8.

15
12
56
28

Answer 1

@gaos

Answer 2

\[\binom{8}{5}\] or \[\binom{8}{3}\] same number

Answer 3

Shouldn't it be \[\left(\begin{matrix}8 \\ 2\end{matrix}\right)\] or \[\left(\begin{matrix}8 \\ 6\end{matrix}\right)\] ?

Answer 4

yes, it is @SemantcSpider. @Satelite73 made mistake.

Answer 5

@Loser66
it's @SemanticSpider
and @satellite73

Answer 6

and yes @satellite73 made a mistake