NUMBER PUZZLE MATH

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Across
  1. 2. Difference using a₂ − a₁ for 7, 12, 17, …
  2. 3. Remainder using f(1) for x³−1
  3. 4. Positive solution of x²=9
  4. 6. 6th term using aₙ = a₁rⁿ⁻¹ for 2, 4, 8, …
  5. 8. Ratio using a₂ ÷ a₁ for 2, 6, 18, …
  6. 11. Number of terms in 3x²−5x+1
  7. 13. One factor of x²−7x+10
  8. 15. −b/2a for y=x²−4x+1
  9. 16. Value of f(1) for x³−2x+1
  10. 17. One factor of x³−4x²−x+4
  11. 20. Highest power term in 4x³ − 2x + 7
  12. 24. Arithmetic mean of 10 and 20
  13. 26. Solution of 2x−8=0
  14. 28. Exponent if 3xⁿ+1 is linear
  15. 29. Common ratio if aₙ₊₁=3aₙ
  16. 30. Value of f(0) for 3x³+2x−8
  17. 32. Exponent in axⁿ+bx+c if quadratic
  18. 33. Arithmetic mean of 8 and 14
  19. 35. Term with x² in 5x²−7x+9
  20. 37. Harmonic mean of 4 and 12
Down
  1. 1. −b/2a for y=x²+2x−3
  2. 5. Geometric mean of 4 and 16
  3. 7. 4th term using aₙ = a₁rⁿ⁻¹ for 3, 6, 12, …
  4. 9. Value of f(2) for f(x)=x²−3x+1
  5. 10. Number of real solutions of x²=−1
  6. 12. Ratio using a₂ ÷ a₁ for 5, 15, 45, …
  7. 13. Remainder using f(1) for x²−4x+3
  8. 14. Value of f(0) for x²−6x+9
  9. 17. Value of f(1) for x²−2x+1
  10. 18. Term with x³ in −3x³+5x−1
  11. 19. Axis of symmetry of y=x²−6x+5
  12. 21. Harmonic mean of 6 and 3
  13. 22. 5th term using aₙ = a₁ + (n−1)d for 2, 5, 8, …
  14. 23. Values making (x−p) a factor of x²−5x+6
  15. 25. 10th term using aₙ = a₁ + (n−1)d for 1, 4, 7, …
  16. 26. Highest power term in x⁴ − x² + 1
  17. 27. Value of f(−1) for x²+2x+1
  18. 31. Arithmetic mean of 4 and 10
  19. 34. Value of f(0) for 2x²−x+4
  20. 36. Maximum solutions of ax²+bx+c=0