Binomial Expansion

a.

Expand $(9+18x)−12\displaystyle (9+18x)^{-\frac{1}{2}}$ in ascending powers of $x\,$ up to and including $x^3$ .

[4]

b.

Write down the range of values of $x\,$ for which the expansion is valid.

[1]

a.

Expand $(9+18x)−12\displaystyle (9+18x)^{-\frac{1}{2}}$ in ascending powers of $x\,$ up to and including $x^3$ .

[4]

b.

Write down the range of values of $x\,$ for which the expansion is valid.

[1]

Binomial Expansion Questions