Practice Quiz

SAT Math - Question List

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21. Which of the following quadratic equations has solutions x_1 = − 3 and x_2 = 4?
  1. x^2 + x − 12 = 0
  2. x^2 − x − 12 = 0
  3. x^2 + x + 12 = 0
  4. x^2 − x + 12 = 0
  5. − x^2 + x − 12 = 0
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22. What is the product of values of k for which equation x^2 − (k − 1)x + 4 = 0 has 1 real solution?
  1. - 15
  2. - 5
  3. - 3
  4. 5
  5. 15
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23. What is the solution of 3 − (x − 1)/2 + (x + 2)/3 = (x + 3)/8?
  1. - 7
  2. - 2
  3. 4
  4. 13
  5. 15
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24. What is the square of the solution of √(7 − x) = − 5 − x?
  1. - 9
  2. - 2
  3. 4
  4. 9
  5. 81
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25. What is the solution of √(5x + 6) = − 4?
  1. - 6/5
  2. - 2/5
  3. 0
  4. 2
  5. There is no solution.
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