Problem 1 of 7
Use the discriminant to identify whether quadratic x^2+4x+8=0 has no real solutions.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
evaluate negative discriminant.
Hidden until you reveal it.
Quadratic must be in standard form ax^2+bx+c=0.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify a, b, and c.
2. Compute b^2-4ac.
3. Use the sign of the discriminant to classify real or complex solutions.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Saying negative discriminant means no complex solutions.