2) \(5^6\cdot5^4=5^{10}\)
5) \(3^7\cdot3^9=3^{16}\)
8) \(\left(-6\right)^5\cdot\left(-6\right)=\left(-6\right)^6=6^6\)
11) \(\left(\dfrac{4}{5}\right)^4\cdot\left(\dfrac{4}{5}\right)^3=\left(\dfrac{4}{5}\right)^7=\dfrac{16384}{78125}\)
14) \(\left(\dfrac{2}{3}\right)\cdot\left(\dfrac{2}{3}\right)^2=\left(\dfrac{2}{3}\right)^3=\dfrac{8}{27}\)
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17) \(\left(-\dfrac{3}{2}\right)^3\cdot\left(-\dfrac{3}{2}\right)^2=\left(-\dfrac{3}{5}\right)^5=\dfrac{-243}{3125}\)
20) \(\left(-\dfrac{2}{3}\right)\cdot\left(-\dfrac{2}{3}\right)^2=\left(-\dfrac{2}{3}\right)^3=\dfrac{-8}{27}\)
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