Finding root of complex equation

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The discussion centers on finding the roots of the complex quadratic equation 3ix^2 + 6x - i = 0 using the quadratic formula. The user initially struggles with the calculation, particularly in separating real and imaginary parts. After some back-and-forth, they clarify that the roots should indeed have both real and imaginary components. The final solution involves expressing the roots correctly, confirming that the user ultimately resolves their confusion. The thread concludes with the user expressing gratitude for the assistance received.
Timmy Time
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Homework Statement


Good day,

I've been have having difficulties finding the roots of this:
Find the roots of 3ix^2 + 6x - i = 0
where i = complex number
i = sqrt(-1)

Homework Equations


quadratic formula (apologies for the large image)
quadratic-formula.jpg


The Attempt at a Solution



using the quadratic formula
[-6 (+-) sqrt (36 - 4(3i)i)] / 6i
= (-6/6i) + (sqrt(24)/6i)
multiplying by conjugate I get:
=i (+-) ((-6i * sqrt(24))/ 36)

I'm stuck here.
apparently the roots should have both real and imaginary parts, but I have 2 imaginary parts. ie x = Re + i Im
what exactly do I have to do next?

Thank you.
 
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You got ##i ^+_- \frac{\sqrt(24)}{6i}##
Now you can write it as ##i ^+_- \frac{2\sqrt(6)}{6i}##
now 1/i=-i
so ##i ^+_- (-i\frac{2\sqrt(6)}{6})## Now take a +/- B as a+b and a-b
 
so, there is no real part for the left side of the answer?
or should I express the answer as:
(0 + i) + (−i * ((2√6)/6) ) and (0 + i) - (−i * ((2√6)/6) )
 
oh, never mind.
I've finally got it.Thank you for your time.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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