#### Answer

$-1$

#### Work Step by Step

Using the Power Rule of the laws of exponents which is given by $\left( x^m \right)^p=x^{mp},$ the expression above is equivalent to
\begin{array}{l}\require{cancel}
i^{34}
\\\\=
\left( i^2 \right)^{17}
\\\\=
\left( -1 \right)^{17}
\\\\=
-1
.\end{array}