


Quadratic PolynomialsQuadratic Polynomials and Functions (Definition)We assume that you are familiar with expanding the product of two linear functions: (x + a)(x + b) A quadratic polynomial in x is an expression
of the form ax^{2} + bx+ c, where a
0. x^{2} − x − 2 A quadratic function is a function of the form y = ax^{2} + bx+ c, where a 0. We first look at functions of the form y = ax^{2}.
Note that at each xvalue, the magnitude of y = ax^{2} grows as the magnitude of a grows.
