simplify the expression to a + bi form: (-9 + 8i) + (8 + 9i)

Explanation:

Step1: Combine real parts

Combine (-9) and (8): (-9 + 8=-1)

Step2: Combine imaginary parts

Combine (8i) and (9i): (8i+9i = 17i)

Answer:

(-1 + 17i)