Question

what is the definition of linear equation and quadric equation and cubic equation

Answer 1

linear equation means equation with degree 1
quadric equation means equation with degree 2
cubic means equation with degree 3

Answer 2

linear equation:

an equation between two variables that gives a straight line when plotted on a graph.

quadric equation:

any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve for x in the quadratic equation x2 + 4x + 4 = 0.

cubic equation:

A cubic equation is an equation involving a cubic polynomial, i.e., one of the form. Since. (or else the polynomial would be quadratic and not cubic), this can without loss of generality be divided through by , giving. A closed-form formula known as the cubic formula exists for the solutions of a cubic equation.