Why quadratic equation is called quadratic?
In mathematics, a quadratic equation is a polynomial equation of
the second degree. The general form is
Where x represents a variable, and a, b, and c, constants, with
a ≠ 0. (If a = 0, the equation becomes a linear equation.)
The constants a, b, and c, are called respectively, the
quadratic coefficient, the linear coefficient and the constant term
or free term. The term "quadratic" comes from quadratus, which is
the Latin word for "square." Quadratic equations can be solved by
factoring, completing the square, graphing, Newton's method, and
using the quadratic formula (given below). One common use of
quadratic equations is computing trajectories in projectile
motion.
Because it is in the form of ax^2+bx+c=0