A polynomial equation of the second degree in a single variable, typically in the form ax^2 + bx + c = 0, where a, b, and c are coefficients and x is the unknown variable. Can be solved using various methods, such as factoring, completing the square, or using the quadratic formula, to find the values of x that satisfy the equation. Widely used in algebra, physics, and engineering to model various phenomena, such as projectile motion, parabolic shapes, and optimization problems. View Solution Guide