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Solving an Equation with Radicals - Problem 6 243 views
If you need to solve an equation with two roots that are added or subtracted, your first goal is to get them on opposite sides of the equals sign. From there, you'll need to square both sides, being very careful with expanding with FOIL. You might have to square both sides a second time, as in this example, to get rid of all of the square roots. Once you have solved for x, you'll need to check the solution(s) to make sure they're not outside the domain.
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