Question

Felicia expanded the binomial shown in her work below. What mistake, if any, did she make?

Answer 1

umm he forgot to multiply the coefficient of x?

Answer 2

the 5 got dropped during the process. The work would be valid if she was given
\[(x+y)^6\]

Answer 3

@UsukiDoll Thanks (: !

Answer 4

the usage of Pascal's triangle is correct
and the usage of the Binomial theorem is correct
but.. the 5 was dropped so the answer between \[(x+y)^6 \]and \[(5x+y)^6\]is different

Answer 5

the part with the x should look like this until the exponent is 0