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Converting recursive & explicit forms of geometric sequences

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{h(1)=26h(n)=h(n1)(9)\begin{cases} h(1)=-26 \\\\ h(n)=h(n-1)\cdot(-9) \end{cases}
Find an explicit formula for h, left parenthesis, n, right parenthesis.
h, left parenthesis, n, right parenthesis, equals