Radical Expressions

Question 1

How do you find the domain of a square root function

Answer 1

set whats inside the square root to greater than nor equal to zero then solve. then write it as an interval

Question 2

How do you graph a square root function

Answer 2

1. set the things only under the square root to greater than or equal to zero and solve for x, this will be your x intercept. after you solve for it
2. next you will use that same equation and find numbers that make whatever is under your root a perfect square (whatever you plug in will be your x part of the point) and then solve for y

Question 3

how do you rationalise a denominator

Answer 3

multiply the numerator and the denominator by the opposite of the denominator