Math

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Across
  1. 5. A way to simplify expressions
  2. 7. The common elements found in both sets
  3. 8. The ratio of a circles circumference to it's diameter
  4. 9. The combination of 2 or more sets
  5. 10. An empty set
Down
  1. 1. A variable that doesn't change in value
  2. 2. An equation when a variable is raised to the 2nd degree
  3. 3. Qhen a number is raised to a certain power
  4. 4. When something cannot be expressed through a ratio/fraction
  5. 6. The name of the system that can identify points using a pair of real number coordinates