Tutorial Learn how to take square root of a negative number using imaginary i term ex 7, root(-121)

The video tutorial explains how to simplify a radical expression involving the square root of a negative number. It begins by introducing the concept of square numbers and the impossibility of taking the square root of a negative number in the real number system. The instructor then breaks down the expression into simpler parts using the rules of roots, ultimately simplifying it to 11i. The tutorial concludes with a reminder of the definition of square roots.

What is the square root of 121?

Explain why we cannot take the square root of a negative number in the real number system.

How can the expression sqrt(121 * -1) be simplified?

What is the final simplified answer of the expression sqrt(121) * sqrt(-1)?

What does the term 'square root' mean in mathematical terms?