Question

Express each of the following in the form of $a+ib$.
${\left(5-3i\right)}^3$

• A. $0+198i$
• B. $-10-198i$
• C. $10-198i$
• D. $10+198i$

Answer 1

Answer: (B)

${\left(5-3i\right)}^3$
$=125-225i-135+27i$
$=-10-198i$