Höchstens so:
\(\left(\dfrac{1}{3}\right)^{\frac{3}{2}} +\left(\dfrac{1}{3}\right)^{\frac{1}{2}}=\left(\dfrac{1}{3}\right)^{1+\frac{1}{2}} +\left(\dfrac{1}{3}\right)^{\frac{1}{2}} =\dfrac{1}{3} \cdot \left(\dfrac{1}{3}\right)^{\frac{1}{2}} +\left(\dfrac{1}{3}\right)^{\frac{1}{2}}=\left(\dfrac{1}{3}+1\right) \cdot \left(\dfrac{1}{3}\right)^{\frac{1}{2}} =\boxed{\dfrac{4}{3} \cdot \left(\dfrac{1}{3}\right)^{\frac{1}{2}}}\)
Hoffe das hilft dir weiter.
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