Easy
Which exponential expression is equivalent to k19k^{\frac{1}{9}}k91 ?
9k^9\sqrt{k}9√k
19k^\frac{1}{9}\sqrt{\sqrt{k}}91√√k
1(k)9\frac{1}{(\sqrt{k})^9}(√k)91
19k\frac{1}{^9\sqrt{k}}9√k1
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