Adding & Subtracting Surds

Lucy introduces the concept of adding and subtracting surds, emphasizing the need for the square root numbers to be the same. She provides an example to illustrate the process and highlights the importance of simplifying surds before performing operations. The video concludes with a brief mention of rationalizing the denominator, which will be covered in a future video.

What is the simple rule for adding and subtracting surds?

Why can't we subtract square root 5 and square root 3?

What should you do before adding or subtracting surds?

What is the importance of simplifying surds?

What does rationalizing the denominator refer to in the context of surds?