Maths puzzle

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Across
  1. 4. maximum number of zeroes of a quadratic polynomial
  2. 5. maximum number of zeroes of a linear polynomial
  3. 7. a polynomial of degree three is called?
  4. 8. standard form of a linear polynomial
Down
  1. 1. geometrical representation of quadratic polynomial
  2. 2. degree of a zero polynomial is?
  3. 3. standard form of a quadratic polynomial
  4. 6. sum of zeroes of a quadratic polynomial
  5. 7. product of zeroes of a quadratic polynomial