anonymous
  • anonymous
Okay i have more questions and more medals to offer nnesha please help. I will post the problem in the comments bc otherwise it will be harder to see.
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
|dw:1441056093942:dw|
Nnesha
  • Nnesha
tbh doesn't matter if you give me medal or not i'll help if i know how to solve the equation :=) so no need to offer anything btw , i prefer chocolates :=)
Nnesha
  • Nnesha
alright first step) multiply the top and bottom with the `conjugate` of the denominator

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anonymous
  • anonymous
oh what kind i have kit kats those are my fav. I know half of the way to create this equation, but I keep getting stuck right at this spot. |dw:1441056481771:dw|
Nnesha
  • Nnesha
right right now simplify that
Nnesha
  • Nnesha
wait a sec
anonymous
  • anonymous
okay
Nnesha
  • Nnesha
yes that's right :=) now simplify that
Nnesha
  • Nnesha
you have i^2 at the numerator
anonymous
  • anonymous
|dw:1441057716162:dw|
anonymous
  • anonymous
what did i do wrong bc im prettysure thats not right
Nnesha
  • Nnesha
HMM how did you get -9 at the denominator ?
Nnesha
  • Nnesha
|dw:1441058073402:dw|
anonymous
  • anonymous
i used foil from the (4-5i) (4+5i) to get -9
Nnesha
  • Nnesha
no that's not right so how did you get 4^2 and 5^2 first time ?
Nnesha
  • Nnesha
draw a box to foil two parentheses |dw:1441058222164:dw| now multiply top with the left terms then write ur answer in the box that's how you will stay away from little mistakes
anonymous
  • anonymous
|dw:1441058403070:dw|
anonymous
  • anonymous
like that
Nnesha
  • Nnesha
|dw:1441058547198:dw| combine like terms yes that' right
Nnesha
  • Nnesha
and replace i^2 with -1
anonymous
  • anonymous
40 * -1 ?
anonymous
  • anonymous
-40
Nnesha
  • Nnesha
oh wait i made a typo it's 4+5i
Nnesha
  • Nnesha
|dw:1441059006385:dw| sorry about that so 20i -20i cancels out