SPHott51
  • SPHott51
(-1 +6i) + (-4 + 2i)
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
the answer is (1+2i)
SPHott51
  • SPHott51
Not one of the answer choices
anonymous
  • anonymous
what are the answer choices

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More answers

SPHott51
  • SPHott51
a: 5-8i b:5-2i c:-5+8i d:3i
tkhunny
  • tkhunny
It would help if you wrote the original problem correctly. It would also help if you showed YOUR work.
anonymous
  • anonymous
combine like terms that is all
SPHott51
  • SPHott51
4-2i -24i +12i^2 4 -26i -12 = -8 -26i ...?
UsukiDoll
  • UsukiDoll
this is addition right? or is it multiplication? oh man I agree with tkhunny.
anonymous
  • anonymous
lol at the risk of repeating myself, combine like terms \[-1+6x-4+2x\]
UsukiDoll
  • UsukiDoll
I think...just a suggestion that if the original poster is typing the equations or questions wrong, we shouldn't go further unless there is more information.
SPHott51
  • SPHott51
I fixed it.. happy now?
UsukiDoll
  • UsukiDoll
much better.. now do what satellite said.
SPHott51
  • SPHott51
This is an imaginary number...
anonymous
  • anonymous
then imagine that \(x\) is \(i\) it is the same process
SPHott51
  • SPHott51
isn't i^2 = -1 ?
anonymous
  • anonymous
yes, but there is no \(i^2\) in your question think you might be confusing addition and multiplication
UsukiDoll
  • UsukiDoll
true, but you're just adding and combining like terms for this one
UsukiDoll
  • UsukiDoll
a typical problem for multiplication would look like this (a+bi)(a-bi) but you don't have that
SPHott51
  • SPHott51
oh........ thanks
UsukiDoll
  • UsukiDoll
for this addition problem your final answer should look like one of these four a+bi,a-bi,ai+b,ai-b
UsukiDoll
  • UsukiDoll
the order doesn't matter that much
SPHott51
  • SPHott51
yeah i got -5 +8i , it's one of the answer choices.
UsukiDoll
  • UsukiDoll
that's correct

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