Math Puzzle

12345678910111213141516171819
Across
  1. 3. √ this symbol is a ?
  2. 5. who is the founder of graph of function?
  3. 6. who is the founder of quadratic equation?
  4. 7. What is this formula "y = x3" for?
  5. 8. we can use ..... to solve length of a line segment
  6. 11. alternative way to solve quadratic equation
  7. 14. what is the formula used for solving quadratic equation?
  8. 16. who is the founder of coordinate geometry?
  9. 18. How do you solve this equation "a^m : a^n"?
Down
  1. 1. who is the founder of indices?
  2. 2. René Descartes introduced what in the 17h century?
  3. 4. what formula found in 1594 bye Simon Stevin?
  4. 7. alternative way to solve quadratic equation
  5. 9. who is the founder of linear inequalities?
  6. 10. How do you solve this equation "a^m x a^n "?
  7. 12. what is this formula "y=mx+c"
  8. 13. What term did Samuel Jeake introduced in 1696
  9. 15. "<" this symbols means?
  10. 17. ">" this symbols means?
  11. 19. when a^0=