14 - Add and Subtract Radical Expressions, Part 1

In this lesson, you will learn how to add and subtract radical expressions in algebra. We must learn that in order to add radicals, the radicals must match exactly along with what is under the radical.

We will practice adding radicals and subtracting radical expressions by solving problems. We must always try and simplify the result and rationalize any denominators present.

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[domaidomai]

Never knew radicals was this is easy. Can't believe i cried over these on 9th grade LOL. Great explanation thanks!

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[gottaluvbuns]

What do you do if you have no extra prime in the prime factor tree? Since if there was an extra, you put them as the radicand. But if there's no extra, what then? I'm trying to solve 2 times cube root of 27 and doing the prime factor tree of 27 is 9 times 3 and 9 becomes 3 times 3. Since it's the cube root, I need triplets. All the 3's in the prime factor tree of 27 has now become one and I have no more extra. Please help asap thank you!