Solving x^3=81

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Math, but fast!
#math #algebra #calculus #trig #數學 #cálculo #matemáticas
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Remember, this is only one of the three solutions, the others two solutions are in the complex world.

leonardoyepes
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Thank you for showing relatively easier problems bprp, been hard to follow with your videos 😅

zacklabs
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What about the conjugate complex solutions?

DanoshTech
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Im not gonna lie i have absolutely no idea what the answer is

reesesman
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I don't know which school he has been in for making his board dirty only

PanDit-wx
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why does sqrt2 gets ± but sqrt3 doesnt?

kitty_blud
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I have an question how did you cancel the ^4

varshaupadhye
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It is a cubic so it shall have 3 roots. I think you could factorizate it in a difference of cubes? Or that one root you found is at multiplicity of 3????

GermanoSousa-tk
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What i thought was going to happen: x^3-81=0 ……… x = 3sqrt3 x = i blah blah blah

abhipatel
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What about the x=-(3.³√3)/2±(3³.³√3²/4)i?
cmiiw I shuck at math

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