the process of changing a polynomial of the form  into a perfect square trinomial , or

any of the squares of the integers. Since 1² = 1, 2² = 4, 3² = 9, etc., 1, 4, and 9 are perfect squares

a function of the form y = ax² + bx + c where a is not equal to zero

the x-intercepts of the parabola or the solution of the equation

written as , where x and y are variables and a, b, and c are numbers with a ≠ 0. In the case of a single variable the standard form becomes ax² + bx + c = 0.

when the quadratic equation is a quadratic function, the vertex form is , where x and y are variables and a, h, and k are numbers – the vertex of this parabola has the coordinates (h, k)

the point where a line meets or crosses the x-axis