Master adding, subtracting, multiplying, and dividing polynomials
A polynomial is an expression made of terms that have: variables with non-negative integer exponents and real number coefficients.
Example: 4x³ - 2x + 7 is a polynomial.
Not a polynomial: x⁻², 1/x, √x (because of negative/fractional exponents or variables in denominators).
⚠️ Degree = highest exponent. This matters for classification and graphing!