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An expression such as x^3 + 2x^2 - 6x - 2, is a cubic expression. 3x - 4 is linear x^2 + 5x - 10 is quadratic These types of expressions can be extended to include higher powers of x, such as x^5 + 3x^3 - 2x^2 + 3 4x^6 + 2x^4 - x^3 + 5 Expressions of this type are called polynomials. Note: Polynomials do not have negative or fractional powers. n is a non-negative integer. The degree of a polynomial is given by the highest power of the variable
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