A complex number is the number which consists of a real number with imaginary number i . x + iy is the form of imaginary number. Also we know that the square of the real number is either 0 or positive. Complex numbers and quadratic equations have the possible result of the problem, complex numbers are helpful in solving the problem of quadratic equation and also we can solve polynomial equations with the help of the complex numbers. A quadratic equation is the polynomial equation of the second degree. It is written in form of ax 2 + bx + c = 0 : where ‘x’ represent the variable and a, b, c are constant with a≠0, if a=0 then the equation will no more be a quadratic equation, then it will be a linear equation. The constant a, b, c are known as the quadratic coefficient, the linear coefficient and the constant term respectively. There are some formulas to calculate the quadratic equation such as completing the square, graphing method, Newton’s method and ...