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Adding & Subtracting Surds | Numbers | Maths | FuseSchool

In this video we are going to have a quick look at adding and subtracting surds.

You should already know how to simplify them.

There is just one simple rule for adding and subtracting surds: the square root number must be the same. And then treat it like an expression: deal with the numbers outside the square root as one thing. And think of the number inside the square root as a letter.

You may be able to simplify the surds first, and then add or subtract them.

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