Classifying Polynomials: All polynomials are classified by degree and number of terms
in Algebra 2 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

If one of the roots of a cubic is a complex root, then so also is one other root.

That's because complex roots always come in pairs, as complex conjugates.

If one root is r1 = a + b.i, then the other (complex) root is r2 = a - b.i

a + b.i and a - b.i are called complex conjugates.

So, if you have been given one complex root, then simply take its complex conjugate as the other complex root.
by Level 11 User (81.5k points)

Related questions

0 answers
asked Mar 26, 2012 in Algebra 1 Answers by anonymous | 293 views
0 answers
Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,081 questions
90,214 answers
58,978 users