Online College Courses for Credit

Radical Expressions

Radical Expressions

Author: Natalia Virani

Students will be able to find the real roots of a given number.

The nth root of a real number a can be written as the radical exponent  where n is the index of the radical and a is the radicand. When the number has more than one real root, the radical sign indicates only the principal or positive root. 

See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

311 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Finding Real Roots

Chapter 8 Lesson 6 Example 1
How to find the real roots of a given number.

Source: Holt, Algebra 2 video tutorials