Find the product of the complex number and its conjugate.

Question

anonymous · Answer

3 + 3i

anonymous · Answer

$(a+bi)(a-bi)=a^2+b^2$ a positive real number

don't think about $i$ or minus signs or let anything else distract you from this calculation. it is just $a^2+b^2$ 

in your case it is $3^2+3^2$which you can do in your head

anonymous · Answer

you dont do the foil thing

anonymous · Answer

no you don't do a foiling thing 
if you do you will get the same answer, but it is not the easy way to do it. 
just $a^2+b^2$ and that is all

anonymous · Answer

this works for all the questions that ask find the product of the complex number and its conjugate?

anonymous · Answer

$(2+3i)(2-3i)=2^2+3^2$
$$(1+\sqrt{2}i)(1-\sqrt{2}i)=1+2$$etc

anonymous · Answer

yes absolutely

anonymous · Answer

so 18 and thanks

anonymous · Answer

yw

anonymous · Answer

can you help with another question i posted