Quadratic equations are polynomials, meaning strings of math terms. An expression like “x + 4” is a polynomial. They can have ...

A good description of Least Squares Fit to Quadratic Data Part of a least squares fit involves solving three equations with three unknowns. Here is a description of using Excel's Solver to do this ...

Elliptic curves are polynomial equations that are at the optimal level of hardness for mathematical inquiry. There is a tidy (and widely taught) formula for finding solutions to quadratic polynomials ...

MOHAMMAD SADEK, ON QUADRATIC TWISTS OF HYPERELLIPTIC CURVES, The Rocky Mountain Journal of Mathematics, Vol. 44, No. 3 (2014), pp. 1015-1026 ...

Kenneth Kramer, Arithmetic of Elliptic Curves Upon Quadratic Extension, Transactions of the American Mathematical Society, Vol. 264, No. 1 (Mar., 1981), pp. 121-135 ...