Problem 58 of 7
Solve x^2-12x+20=0 by completing the square.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
isolate squared binomial and take square roots.
Hidden until you reveal it.
Quadratic must be solvable by completing the square with real roots in the supplied cases.
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Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Move the constant term if helpful and normalize the leading coefficient.
2. Complete the square on the x terms.
3. Take square roots and solve both resulting linear equations.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Decimal-only answers when exact radical or integer form is requested.