Binomial Expansion

a.

Find the first three terms, in ascending powers of $x$ , in the expansion of

3 + kx)^6

where $k$ is a positive constant.

[3]

b.

Hence, given that the coefficient of $x^2$ is six times the coefficient of $x$ , find the value of $k$ .

[3]

a.

Find the first three terms, in ascending powers of $x$ , in the expansion of

3 + kx)^6

where $k$ is a positive constant.

[3]

b.

Hence, given that the coefficient of $x^2$ is six times the coefficient of $x$ , find the value of $k$ .

[3]

Binomial Expansion Questions