Problem 115 of 7
Identify domain restrictions before solving equation sqrt(x-5)=4.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
exclude denominator zeros and invalid even-root radicands.
Hidden until you reveal it.
Exclude denominator zeros and invalid even-root radicands before solving.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Inspect every denominator and set it nonzero.
2. Inspect every even-root radicand and set it nonnegative.
3. Carry restrictions into solution checking.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Missing a canceled denominator or radical domain restriction.