Question

find the term independent of x in the expression of (6x+1/x)^12

Answer 1

12C6 (6x)^6 (1/x)^6
= 12C6 6^6

Answer 2

- which is a huge number!

Answer 3

can u plz explain little bit as i m non maths student

Answer 4

the formula used is

(r + 1) term of (x + b)^n = nCr x^(n-r) b^r

Answer 5

nCr
means the number of combinations of r in n
for example,
5C2 = 5*4
--- = 10
2*1

Answer 6

the expansion is called the binomial theorem
a simple example is

(x+3)^3 = x^3 + 3x^2*3 + 3x*3^2 + 9

Answer 7

typo - last term is 3^3 = 27