Lol

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Across
  1. 2. Positive
  2. 4. Coefficient
  3. 5. Rational
  4. 8. Parabola
  5. 12. Sumofzeroes
  6. 13. quadraticpolynomial
  7. 14. Degree
  8. 15. Irrational
  9. 16. Cubic
  10. 17. Lcm
  11. 18. Algorithm
Down
  1. 1. Zero
  2. 3. Euclid
  3. 6. Linear
  4. 7. Composite
  5. 9. Terminating
  6. 10. HFC
  7. 11. Prime
  8. 14. Discriminant
  9. 17. Lemma