SOLUTION: What are all the complex fourth roots of -81?
Algebra.Com
Question 1032054: What are all the complex fourth roots of -81?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
What are all the complex fourth roots of -81?
--------
-81 --> 81cis(180)
--
4th roots: 3cis(45), 3cis(135), 3cis(225), 3cis(315)
RELATED QUESTIONS
find all the complex roots. leave your answer is polar form with arguments in degress.... (answered by stanbon)
the complex fourth roots of -16? Leave answers in polar form with the argument in... (answered by Alan3354)
find all the real fourth roots of... (answered by robertb)
When are the roots of X^2 + ax + b complex? What does the sketch look... (answered by MathLover1)
what are the fourth roots of negative 16 in polar... (answered by Alan3354)
what would be the smallest form of the x^16y^8/81 all in the fourth... (answered by ankor@dixie-net.com)
how do you find the nth term of a negative complex number?
for example the fourth... (answered by venugopalramana)
how do you find the number of complex roots in a equation such as {{{ a^2-81=0... (answered by richard1234)
show that the complex numbers have square roots and that the square roots are contained... (answered by Fombitz)