Mini-Quiz: Using the Quadratic Equation Formula

1. What are the solutions to x2 − x − 6 = 0?

   x = [−1 ± √(−1 + 24)]/2Sorry, not correct. Try another button. x = [1 ± √(1 + 24)]/2That is correct. You understand the quadratic formula. x = 2 and x = 3Good try, but not right. Select another answer.

2. What are the solutions to 2×2 + 5x + 1 = 0?

   x = [−5 ± √17]/4Correct. You know how to do it. x = −5 ± (√17)/4Sorry, not correct. Try another button. x = [−5 ± √−17]/4Oops! Wrong answer. Re-read the question and try again.

3. What are the solutions to x2 − x + 1 = 0?

   x = 1/2 ± (√−3)/2That is correct. You understand the quadratic formula. x = −1/2 ± (√3)/2Good try, but not right. Select another answer. x = −1/2 ± (√−3)/2Oops! Wrong answer. Re-read the question and try again.

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