Multiplication of Complex Numbers

(2i)(3i)

• 5i

• -5

• 6i

• -6

Multiply:

(1 − 2i)(6 + 5i)

• 16 − 7i

• -16 + 7i

• -16 − 7i

• 16 + 7i

(4-5i)(4+5i)

• 41

• -9

• 41+40i

• -9+40i

(3+4i)(-8-i)

• -5+3i

• -24-4i

• -24-4i²

• -20

• -20-36i

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i

• 63 - 24i  - 12i²

• 51 - 24i

• 58 + 60i

(i)(-3i)(5i)

• 15i

• -15i

• -15i³

• 15i³

Simplify:

3i(-2+4i)

• -6+12i

• -12-6i

• -2+7i

• 12+6i

Simplify:

(2 - 5i)(4 + i)

• 13

• 3

• 6 - 4i

• 13 - 18i

multiplicative identity of a complex number z_1 is ?

• 0

• 1

Multiply
(3i)(-2+4i)

• -6+12i

• -12-6i

• -2+7i

• 12+6i