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Adding and Subtracting RADICALS. Northwest-Shoals Community College Kim Ricketts- Mathematics Instructor. Adding and Subtracting Radicals:. More examples: EX 1 EX 2 Does not have matching radicands! Can’t be simplified. EX 3 Does not have matching indexes! Can’t be simplified.
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Adding and SubtractingRADICALS Northwest-Shoals Community College Kim Ricketts- Mathematics Instructor
Adding and SubtractingRadicals: More examples: EX 1 EX 2 Does not have matching radicands! Can’t be simplified. EX 3 Does not have matching indexes! Can’t be simplified. • ONLY radical expressions with the same indexAND the same radicand may be combined. • Remember that just like fractions need common denominators when adding/subtracting. Radicals need common indexes and radicands. • Example:
Example 2: • Don’t forget to write the index on the radicals (if they are not square roots)!
Example 3: We need a common denominator!