Question

(-8-i)(-1-5i)

Answer 1

Foil
\[i^2 = (-1)\]
group like terms

Answer 2

you know how to FOIL right?

Answer 3

yea i got it

Answer 4

you should give a medal to the person who helped you so he'll know you got it ;D

Answer 5

If you don't like FOIL you might want to try to multiply the "ole fashion way"

-8 -i
-1-5i
---------------
8+i
+40i +5i^2
-------------
8 +41i-5

Consolidating: 3+41i

Answer 6

Oh, I like that, Radar. Never actually seen that.

Answer 7

Same thing as foil, but in a way you can see it.

Answer 8

Being 73 yrs old, that was the way I first saw it, but now most do it mentally using foil.

Answer 9

Oh my. Old guy is tech savvy. =D