Simplify the expression.
(-2 - 2i)(-4 + 6i)
@nikato

Question

Simplify the expression.
(-2 - 2i)(-4 + 6i)
@nikato

anonymous · Answer

does "simplify" mean "multiply"?

anonymous · Answer

8 - 4i
8 - 12i
20 - 4i
-4 - 4i

Im not sure :/

anonymous · Answer

$$(a+bi)(c+di)=(ac-bd)+(ad+bc)i$$

anonymous · Answer

or just multiply out like in algebra "foil" (ugh) and when you get $i^2$ replace it by $-1$

anonymous · Answer

So it would be the fourth option sinc it contains a negative @satellite73 ?

triciaal · Answer

@satellite73  no it doesn't
to simplify means to reduce to its lowest form
in this problem means to get rid of parenthesis and to do that we need to multiply

anonymous · Answer

Okay @triciaal  so what do I do?

triciaal · Answer

for this problem yes you need to multiply

the point I am making is that sometimes simplify may mean you have to divide etc 
whatever is necessary to reduce to the lowest form

anonymous · Answer

Okay.. so steps are?

triciaal · Answer

what @satellite73 has above is correct

anonymous · Answer

Could you help with that process?

anonymous · Answer

what i was trying to say was that the instructions are incorrect
there is no such mathematical operation as "simplify"
in this case it means "multiply"

jim_thompson5910 · Answer

Instead of memorizing a formula, you can use a table like this to expand out the expression

|dw:1415248132277:dw|

keep in mind that i^2 = -1