Question

Simplify:

\[\left[ \left( \frac{1}{3} \right)^{- 3} - \left( \frac{1}{2} \right)^{- 3} \right] \div \left( \frac{1}{4} \right)^{- 3}\]

Answer 1

\[\left[ \left( \frac{1}{3} \right)^{- 3} - \left( \frac{1}{2} \right)^{- 3} \right] \div \left( \frac{1}{4} \right)^{- 3}\]-`(3^3-2^3)div4^3`   `->(a^n=1/(a^n))`

`=(27-8)div64`

`=19xx1/64`

`=19/64`