If p(x) is a polynomial in x, the highest power of x in p(x) is called the  −b/a−d/ac/acubicdegreelinearparabolaquadratic of the polynomial p(x).

A polynomial of degree 1 is called a  −b/a−d/ac/acubicdegreelinearparabolaquadratic polynomial.

A polynomial of degree 2 is called a  −b/a−d/ac/acubicdegreelinearparabolaquadratic polynomial.

A polynomial of degree 3 is called a  −b/a−d/ac/acubicdegreelinearparabolaquadratic polynomial.

A  −b/a−d/ac/acubicdegreelinearparabolaquadratic is a U-shaped plane curve where any point is at an equal distance from a fixed point and from a fixed straight line.

A  −b/a−d/ac/acubicdegreelinearparabolaquadratic polynomial can have at most 2 zeroes.

A  −b/a−d/ac/acubicdegreelinearparabolaquadratic polynomial can have at most 3 zeroes.

If α and β are the zeroes of the quadratic polynomial ax²+bx+c=0, then α +β =  −b/a−d/ac/acubicdegreelinearparabolaquadratic .

If α, β, γ are the zeroes of the cubic polynomial ax³+bx²+cx+d=0, then α +β + γ =  −b/a−d/ac/acubicdegreelinearparabolaquadratic .

If α, β, γ are the zeroes of the cubic polynomial ax³+bx²+cx+d=0, then αβ+ βγ+ γα =  −b/a−d/ac/acubicdegreelinearparabolaquadratic .

If α, β, γ are the zeroes of the cubic polynomial ax³+bx²+cx+d=0, then αβγ =  −b/a−d/ac/acubicdegreelinearparabolaquadratic.

If α and β are the zeroes of the quadratic polynomial ax²+bx+c=0, then αβ =  −b/a−d/ac/acubicdegreelinearparabolaquadratic.