polynomials

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Across
  1. 4. an alphabet or term that represents an unknown number
  2. 6. term with no variable
  3. 7. a polynomial of degree one
  4. 8. a polynomial of degree three
Down
  1. 1. _____ indicates the highest exponential power in the polynomial
  2. 2. algebraic expressions that consist of variables and coefficients
  3. 3. A real number k is said to be a _____ of p(x) if p(k)=0
  4. 5. a polynomial of degree two