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rkent100
 3 years ago
can someone help me with complex numbers and the quadratic equaion
rkent100
 3 years ago
can someone help me with complex numbers and the quadratic equaion

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chaise
 3 years ago
Best ResponseYou've already chosen the best response.2I'd love to  do you want help with anything specific, or just something broad?

rkent100
 3 years ago
Best ResponseYou've already chosen the best response.0i don't get multiplying and dividing complex numbers

chaise
 3 years ago
Best ResponseYou've already chosen the best response.2You can simply use foil to multiply complex numbers together. When you divide it's a little bit more tricky, you need to multiply by the conjugate of the denominator. Maybe try watching this video :) This guy is good. http://www.youtube.com/watch?v=KPSj476eEc

rkent100
 3 years ago
Best ResponseYou've already chosen the best response.0my math teacher said i need to study quadratic equation before my test tomorrow

chaise
 3 years ago
Best ResponseYou've already chosen the best response.2http://www.youtube.com/watch?v=iulx0z1lz8M It's not too difficult, and really easy to pickup :)

fiddlearound
 3 years ago
Best ResponseYou've already chosen the best response.0These are good videos about complex numbers: http://www.khanacademy.org/video/complexnumberspart1?playlist=Algebra http://www.khanacademy.org/video/complexnumberspart2?playlist=Algebra And this is for the quadratic formula: http://www.khanacademy.org/video/introductiontothequadraticequation?playlist=Algebra

fiddlearound
 3 years ago
Best ResponseYou've already chosen the best response.0Correction: http://www.khanacademy.org/video/quadraticequationpart2?playlist=Algebra

rkent100
 3 years ago
Best ResponseYou've already chosen the best response.0on a recent quiz i got this problem wrong find the product: (3+6i)(47i) and i got 7i.

chaise
 3 years ago
Best ResponseYou've already chosen the best response.2You need to use foil, seems to me you added liketerms. You need to foil. You should get: 54+3i You should watch them videos.

Denebel
 3 years ago
Best ResponseYou've already chosen the best response.0\[1221i+24i42i^2\] \[1221i+24i+42\] 54+3i \[i^2\] becomes 1.
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