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Solving Equations

Extraneous Solutions

Example

Solve Radical_ex1

Step 1. Isolate the radical or power expression.

Radical_ex2

Step 2. Use inverse operations to eliminate the radical or power.

Radical_ex3

Step 3. Solve the remaining equation.

Radical_ex4

Step 4. Check for extraneous solutions.

Radical_ex5

The solution is x = -3.