### Home > INT2 > Chapter 8 > Lesson 8.1.1 > Problem 8-19

8-19.

Multiply the following complex numbers. Write your answers in

*a*+*bi*form. Homework Help ✎(9

*i*)(2*i*)(2 +

*i*)(5 –*i*)(3 –

*i*)(13*i*)

Remember that *i*^{2} = −1.

11 + 3*i*

8-19.

Multiply the following complex numbers. Write your answers in

*a*+*bi*form. Homework Help ✎(9

*i*)(2*i*)(2 +

*i*)(5 –*i*)(3 –

*i*)(13*i*)

Remember that *i*^{2} = −1.

11 + 3*i*