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This video looks at adding and subtracting radical expressions (square roots). It includes four examples.

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It seems that all radical expressions are different from each other. First, let’s simplify the radicals, and hopefully, something would come out nicely by having “like” radicals that we can add or

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We add and subtract like radicals in the same way we add and subtract like terms. We know that is Similarly we add and the result is . Think about adding like terms with variables as you do the

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Identify like radicals. There are two keys to combining radicals by addition or subtraction: look at the index, and look at the radicand. If these are the same, then addition and subtraction are

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We're asked to add and simplify and we have the principle root of two x squared plus four times the principle root of eight plus three times the principle root two x squared plus the principle root of eight so

There are two keys to combining radicals by addition or subtraction: look at the index, and look at the radicand. If these are the same, then addition and subtraction are possible. If not, then you