Answer
The standard form of the expression $\left( 8-3i \right)-\left( 17-7i \right)$ is $-9+4i$.
Work Step by Step
Consider the expression, $\left( 8-3i \right)-\left( 17-7i \right)$
Remove the parentheses.
$\left( 8-3i \right)-\left( 17-7i \right)=8-3i-17+7i$
Combine the real part and the imaginary part.
$\begin{align}
& \left( 8-3i \right)-\left( 17-7i \right)=\left( 8-17 \right)+\left( -3i+7i \right) \\
& =-9+\left( -3+7 \right)i \\
& =-9+4i
\end{align}$
Therefore, the standard form of the expression $\left( 8-3i \right)-\left( 17-7i \right)$ is $-9+4i$.
