Find :

$(i)$ $9^{\frac{3}{2}}$

$(ii)$ $32^{\frac{2}{5}}$

$(iii)$ $16^{\frac{3}{4}}$

$(iv)$ $125^{\frac{-1}{3}}$

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$(i)$ $9^{\frac{3}{2}}=\left(3^{2}\right)^{\frac{3}{2}}=3^{2 \times \frac{3}{2}}=3^{3}=27$

$(ii)$  $32^{\frac{2}{5}}=\left(2^{5}\right)^{\frac{2}{5}}=2^{5 \times \frac{2}{5}}=2^{2}=4$

$(iii)$  $16^{\frac{3}{4}}=\left(2^{4}\right)^{\frac{3}{4}}=2^{4 \times \frac{3}{4}}=2^{3}=8$

$(iv)$  $(125)^{-\frac{1}{3}}=\left(5^{3}\right)^{-\frac{1}{3}}=5^{3 \times\left(-\frac{1}{3}\right)}=5^{-1}=\frac{1}{5}$

Similar Questions

Rationalise the denominator of $\frac{5}{\sqrt{3}-\sqrt{5}}$.

Write the following in decimal form and say what kind of decimal expansion each has :

$(i)$ $\frac{36}{100}$

$(ii)$ $\frac{1}{11}$

$(iii)$ $4 \frac{1}{8}$

$(iv)$ $\frac{3}{13}$

$(v)$ $\frac{2}{11}$

$(vi)$ $\frac{329}{400}$

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Express $0.99999 \ldots$ in the form $\frac{p}{q}$. Are you surprised by your answer ? With your teacher and classmates discuss why the answer makes sense.

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