Problem 133 of 7
Solve simple rational-exponent equation (x-1)^(1/2)=4.
Hints
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apply inverse power/root operations.
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Equation must be solvable by inverse power/root operations and domain checking.
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Correct
Your answer is equivalent to the expected form.
Solution
Walkthrough
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1. Apply the inverse operation to isolate the base expression.
2. Consider root index and power effects on sign.
3. Check solutions in the original equation.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Losing negative solution in even-power-after-odd-root cases.