Algebra 2 - Simplifying a complex number by multiplying by i on the top and bottom, 5/i

The video tutorial explains the concept of imaginary numbers, particularly focusing on the imaginary unit 'i'. It discusses why division involving 'i' in the denominator is not straightforward and introduces the method of multiplying by the conjugate to simplify such expressions. The tutorial further explains how multiplying by the same number in the numerator and denominator creates an equivalent fraction, using examples to illustrate the simplification process. The session concludes with a simplified expression, demonstrating the effectiveness of these techniques.

How does multiplying by the conjugate help in simplifying expressions involving 'i'?

What is the final simplified form of the expression involving '5i' and 'i squared'?