Problem 201 of 7
Diagnose and correct the error in this quadratic solution: For x^2+4x+8=0, discriminant is 48.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
catch factoring, formula, discriminant, square-root, and complex-number mistakes.
Hidden until you reveal it.
Bad work must include one clear quadratic-solving error.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Find the first incorrect algebra or reasoning step.
2. Explain why that step is invalid.
3. Redo the solving step correctly.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Vague statements such as 'algebra error' without locating the mistake.