# How do you multiply #(1+3i)(-4-7i)(6-5i)#?

##### 1 Answer

Oct 10, 2016

You can convert them into polar form and multiply them that way but I think it is just as easy to use the F.O.I.L. method (twice):

Answer:

#### Explanation:

You can convert them into polar form and multiply them that way but I think it is just as easy to use the F.O.I.L. method (twice):

Use

Combine like terms:

Use

Combine like terms: