Simplify a fraction under a square root - Legal cheating for math

The video tutorial explains the property of square roots, specifically how the square root of a fraction can be expressed as the square root of the numerator divided by the square root of the denominator. It uses examples with numbers to demonstrate this property and explains the process of rationalizing the denominator when dealing with irrational numbers. The tutorial concludes with a final simplification of the expression.

What is the property that allows us to express sqrt(a/b) as sqrt(a)/sqrt(b)?

How can you simplify sqrt(16)/sqrt(4)?

Why is it necessary to rationalize the denominator when dealing with square roots?

What is the result of multiplying sqrt(7) by sqrt(3) and how does it relate to rationalizing the denominator?

What is the final simplified form of sqrt(21)/3?