precalculus
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precalc
express the roots of unity in standard form a+bi. 1.) cube roots of unity 2.) fourth roots of unity 3.) sixth roots of unity 4.) square roots of unity
asked by Yoshi on April 20, 2011 
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Bob, I did eventually find a factorization for the expression x^4 + 2x^3 + 4x^2 + 8x +16 The original problem was probably something like x^532=0. I think the poster divided (x2) into it to get the expression above. This of
asked by Roger on August 29, 2006 
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if w is one of the complex cube roots of unity, show that 1+w equals 1. w is raised to power 2
asked by Shanu on January 24, 2015 
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What is the smallest positive integer $n$ such that all the roots of $z^4 + z^2 + 1 = 0$ are $n^{\text{th}}$ roots of unity?
asked by HELP :D on May 9, 2017 
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What is the smallest positive integer $n$ such that all the roots of $z^4  z^2 + 1 = 0$ are $n^{\text{th}}$ roots of unity?
asked by Bobby on March 6, 2017 
Precalculus
What is the smallest positive integer $n$ such that all the roots of $z^4 + z^2 + 1 = 0$ are $n^{\text{th}}$ roots of unity?
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Let $R$ be the set of primitive $42^{\text{nd}}$ roots of unity, and let $S$ be the set of primitive $70^{\text{th}}$ roots of unity. How many elements do $R$ and $S$ have in common?
asked by Bobby on February 15, 2017 
Math
Roots Ok, what about roots? Roots of polynomials? Square roots? Cube roots? Terminology, notation, equations using them? Help us out here a little.
asked by Rorshin on September 5, 2006 
maths
If 5x414x³+18x²+40x+16=(x²4x+8)(ax²+bc+c) find a,b and c and hence find the four solutions of the equation 5x414x³+18x²+40x+16 Given that x³1=(x&)(ax²+bx+c) find the values of a,b and c and hence find the three roots
asked by Anonymous on September 25, 2008 
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How to factor x^3  3x^2 + 4 =0 Use D'Alembert's Rational Roots Theorem. Any rational roots of the form of p/q (p and q assumed to be relatively prime) must be such that p divides the constant term (in this case 4) and q divides
asked by Ed on July 14, 2007