Question

if the constant term in the expansion of (kx-1/x)^4 is 24, find k. Can you give the answer and show me how to solve it please?

Answer 1

so when you multiply all that out you will have the constant term is 24

Answer 2

so I guess you know how to expand this using pascal's triangle?

Answer 3

if not we can straight multiply it out

Answer 4

\[(a+b)^4=1(a)^4+4(a)^3(b)+6(a)^2(b)^2+4(a)(b)^3+1(a)^4\]

Answer 5

all you really have to do is replace a with kx
and b with -1/x

Answer 6

then figure out what term doesn't have any x's after simplifying

Answer 7

and that will be your constant term