1.1 Radical expressions rationalizing denominators

Question 1

How to write the congugate of a radical expression in terms of 1 plus square root 2

Answer 1

1 minus square root two

Question 2

How to rationalize a radical expression?

Answer 2

Assuming that there is one radical one would multiply the numerator and denominator by that radical it eliminate where the radical originally was

Question 3

What are like radicals?

Answer 3

Variables with the same radical