anonymous
  • anonymous
find real numbers a and b such that the equation is true (a-1)+(b+3)i=5+8i
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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sidmanfu
  • sidmanfu
In equations like this you can always separate real and imaginary numbers into separate equations. So, hypothetically if you had x+yi = 4 - 3i you could separate the equation to x=4 and yi= -3i, so x=4 and y= -3 Now back to your question: First you multiply things out (this isn't that important for the above question, but could be if you had to keep track of multiplying i's together i.e. x + (y+zi)*(i+3) = 8. I won't solve it, but you would have to "FOIL" that last part.) so... back to your question again. multiplying stuff out... a - 1 + b*i +3*i = 5 + 8*i separate into separate equations for real and imaginary (as shown at top) a - 1 = 5 b*i + 3*i = 8*i now solve using basic algebra to get... a = 6 b*i = 5*i, therefore b=5
anonymous
  • anonymous
No direct answers, please.
sidmanfu
  • sidmanfu
I hope I helped enough @Patsfan12 :)

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anonymous
  • anonymous
thanks! your explanation was very thorough :)
sidmanfu
  • sidmanfu
no problem! ask me any questions u help with ;)
anonymous
  • anonymous
i will don't worry XD
sidmanfu
  • sidmanfu
lol
sidmanfu
  • sidmanfu
and please fan me
anonymous
  • anonymous
I thought I did?
anonymous
  • anonymous
yes I am :)
sidmanfu
  • sidmanfu
ok thanks :P
anonymous
  • anonymous
Ok @sidmanfu the instructions are to perform the operation and write the result in standard form: sqrt(-6) x sqrt(-2)
triciaal
  • triciaal
|dw:1443486406539:dw|
triciaal
  • triciaal
|dw:1443486540660:dw|
anonymous
  • anonymous
(1+i)(3-2i)
anonymous
  • anonymous
@sidmanfu
sidmanfu
  • sidmanfu
yes?
anonymous
  • anonymous
help on that last one i posted?
anonymous
  • anonymous
(1+i)(3-2i)
sidmanfu
  • sidmanfu
ok
anonymous
  • anonymous
never mind I got it
sidmanfu
  • sidmanfu
oh ok lol :)
sidmanfu
  • sidmanfu
any other questions u want me to help u with?
anonymous
  • anonymous
I will let you know ;)
sidmanfu
  • sidmanfu
ok and did u add me on snapchat too?
anonymous
  • anonymous
sure
sidmanfu
  • sidmanfu
do u still need help?

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