simplify the expression to a + bi form: (-10 - 3i) - (2 + 10i)

Explanation:

Step1: Remove the parentheses

$$(-10 - 3i)-(2 + 10i)=-10-3i - 2-10i$$

Step2: Combine like terms

Combine the real parts (-10-2=-12) and the imaginary parts (-3i-10i=-13i)

Answer:

(-12-13i)