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Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
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When adding and subtracting radicals, you can only combine radicals with the same index and radicand (the number inside the radical). Here are some examples:
Ensure that the denominators are the same when adding or subtracting fractions.
similar-a similar radicand is to add or subtract similar radicals we simply add and subtract there coefficients and Anex to the sum of their common radical part.