In this lesson, we learn how to solve radical equations that contain cube roots and square roots. The key is to isolate the radical expression and then either square or cube both sides to eliminate the radical. Once we have a polynomial equation, we can factor it and set each factor equal to zero to find the solutions. However, we must check our solutions in the original equation, as some solutions may not work due to extraneous solutions created during the squaring and cubing process.
More practice with solving radical equations.
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