Answer
$0+7i$
Work Step by Step
$\sqrt{-49}$
Rewrite this expression as $(\sqrt{-1})(\sqrt{49})$:
$\sqrt{-49}=(\sqrt{-1})(\sqrt{49})=...$
Evaluate $\sqrt{49}$:
$...=7\sqrt{-1}=...$
Since $\sqrt{-1}=i$, this expression becomes:
$...=7i=...$
Rewrite in $a+bi$ form:
$...=0+7i$
