quadratic formula

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Across
  1. 2. a rule written with mathematical symbols
  2. 4. the biggest number
  3. 5. possible y inputs
  4. 9. the part inside the square root of a quadratic formula
  5. 10. possible x inputs
  6. 12. a number with a variable
  7. 14. all numbers that come between two certain numbers
  8. 15. when two sides are the same
  9. 17. a letter in the alphabet usualy accompined by a number
  10. 19. the lowest number in a parabola
Down
  1. 1. the highest point, the top
  2. 2. a relation with a set of inputs and outputs
  3. 3. an easy/fixed way of writing numbers
  4. 6. a solution to an equation
  5. 7. the highest number in a parabola
  6. 8. a line in respect to a curve
  7. 11. a curve
  8. 13. #<0
  9. 16. multiplying a number by itself and raising it to the second power
  10. 18. the fix to a problem