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11 Questions

Solve a quadratic equation using the quadratic formula

Solve quadratic equations having real solutions by applying the quadratic formula. Based on TEKS Algebra I standard 8a and high school Common Core standard, grade 9

Math_by_Kahoot, 01/16/2018 answers
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  1. How should the equation −5x² = 6x − 1 be rewritten before applying the quadratic formula?
    5x² − 6x − 1 = 0 5x² − 6x + 1 = 0 5x² + 6x − 1 = 0 5x² + 6x + 1 = 0
  2. What are the solutions to x² + 2x − 5 = 0?
    x = −1 ±√6 x = −1 ±√12 x = −1 ±√24 There is no real solution.
  3. When you use the quadratic formula to solve a quadratic equation, what is true?
    It always yields rational solutions. It always yields irrational solutions. It always yields 2 real solutions. It always yields 0, 1, or 2 real solutions.

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