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blahblah_who_cares
 2 years ago
Divide: (12+9i)/(34i)
blahblah_who_cares
 2 years ago
Divide: (12+9i)/(34i)

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Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2\[\frac{ 12+9i }{ 34i }\times \frac{ 3+4i }{ 3+4i }=\frac{ (12+9i)(3+4i) }{ 9+16 }\]

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2Rationalise the denominator mate....

blahblah_who_cares
 2 years ago
Best ResponseYou've already chosen the best response.0Thanks forgot about that. U cant have i in the denominator. i was using long division. fail.

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2Mate. If you need the answer to refer to when you do it. Here's what you want to get as your answer. 3i is the answer.

blahblah_who_cares
 2 years ago
Best ResponseYou've already chosen the best response.0I knew what the answer was. I just forgot how to get it.

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2ah okay, no worries then.

blahblah_who_cares
 2 years ago
Best ResponseYou've already chosen the best response.0Can you help me with one more problem?

blahblah_who_cares
 2 years ago
Best ResponseYou've already chosen the best response.0How do i find an absolute value of a binomial with an i?

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2absolute value of a complex number means the distance of the curve of the complex number. To find the distance of complex number curve, you just use pythagoras... \[\left a+ib \right=\sqrt{a^2+b^2}\]

blahblah_who_cares
 2 years ago
Best ResponseYou've already chosen the best response.0So "i" just disappears?

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2Dude haven;t you learnt about absolute values? The absolute value of something is the distance from the origin.

Azteck
 2 years ago
Best ResponseYou've already chosen the best response.2You're finding the distance from the origin to to the point (a, b)
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