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

the expression b² – 4ac under the radical in the quadratic formula; the expression can be used to determine the number of real roots the quadratic equation has

written as y = a(x – p)(x – q), where the x-intercepts are p and q

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

a monomial or sum of monomials, like 4x² + 3x – 10

a monomial or sum of monomials, like y = 4x² + 3x – 10

an equation that can be written in the form ax² + bx + c = 0 where a ¹ 0. When written as y = ax² + bx + c the expression becomes a quadratic function.

the formula  ; it is used to solve a quadratic equation of the form

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

states that if ab = 0, then either a = 0 or b = 0, or both a and b are 0