Question

Perform the indicated operation and write the answer in the form a + bi.
(9+ i)(-6+5i)

Answer 1

-59 + 39i

Explanation:

Apply the Distributive Property of Multiplication:

(9)(-6) + (9)(5 i) - 6i - 5 (recall that i^2 = -1)

or:

-54 + 45i - 6i - 5, or

-59 + 39i