Question

Perform the indicated operation and write the result in the form a+bi. -9i(-9i+4)+3(8+8i)

Answer 1

D^^

Explanation:

Edge

Answer 2

- 57 - 12i

distribute the parenthesis

= 81i² - 36i + 24 + 24i

[ note that i² = (√- 1 )² = - 1 ]

= - 81 - 36i + 24 + 24i ( collect like terms )

= - 57 - 12i