Answer:
The expression can be written in the form a+bi as;
[tex]-5-13i[/tex]Explanation:
We want to simplify the given expression to the form;
[tex]a+bi[/tex]Given the expression;
[tex](-9-8i)-(-4+5i)[/tex]solving we have;
[tex]\begin{gathered} (-9-8i)-(-4+5i) \\ =-9-8i-(-4)-(5i)_{} \\ =-9-8i+4-5i \\ =-9+4-8i-5i \\ =-5-13i \end{gathered}[/tex]Therefore, the expression can be written in the form a+bi as;
[tex]-5-13i[/tex]where;
a = -5
b = -13
