Domain of a Radical Function Example #1

• everything inside a root (only even roots, square root, 4th root, etc), cannot be negative, so it must be greater than or equal to 0
• solve for x
• remember, in an inequality, when multiplying and dividing by a negative number, flip the inequality sign

Domain of a Radical Function Example #2

Domain of a Radical Function Example #3

• if you get an answer that you're unsure about, test x values in each range to find the correct domain