Pascal

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Across
  1. 2. Coefficient of x? in (1 + 3x)4.
  2. 4. The power to which a number or expression is raised.
  3. 5. Product of all positive integers up to a given number.
  4. 8. Expression that contains two separate terms.
  5. 10. Mathematician known for the triangle of numbers.
  6. 11. Coefficient of x* in (1 + x) 5
  7. 12. The geometric figure formed by Pascal’s pattern.
Down
  1. 1. The number that multiplies a variable in an expression.
  2. 3. The process of writing out powers of a binomial.
  3. 6. Way of selecting items where order doesn’t matter.
  4. 7. Coefficient of x5 in (1 + 2x)5.
  5. 9. Product of all positive integers up to n.