A polynomial is any expression (i.e. no = sign) that is the sum of several monomials. Subtraction is ok, but to be a polynomial they can't be divided, and they can't be multiplied with parentheses. Polynomials: 5x+4xy; x2+3x-2; 42x-1. Not Polynomials: (10x)/2+4xy; x(x+3); 45. ---- A monomial is one or more numbers or variables multiplied together. For example, 5x, 23, x2, and 4a3b are monomials. The exponents must be natural numbers.
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