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

Quadratic equations can have two solutions, or roots, and we already know one of them: Since (0, 5) is a point of intersection of the line and the circle, x = 0 must be a solution to our equation.

Mauricio G. C. Resende, K. G. Ramakrishnan, Zvi Drezner, Computing Lower Bounds for the Quadratic Assignment Problem with an Interior Point Algorithm for Linear ...