Quadratic Equation In One Variable

Quadratic equations explained in detail in all aspects. Quadratic equations have extended number system from rational numbers to real number system, including irrationals, from real numbers to complex numbers, including imaginary numbers. Theory of complex numbers have proved the fundamental theorem of algebra, confirming that every polynomial has a root. Attempts to prove the theorem has given rise to discovery of algebraic structures, fields vector spaces, linear spaces. In short all the branches of Mathematics seem to have sprung up from quadratic equations.