Formulation of Solutions of Solvable Standard Quadratic Congruence of Odd Composite Modulus a product of two different odd primes and also a product of twin-primes

In this paper, a new method of finding solutions of a solvable standard quadratic congruence of composite modulus which is a product of two different odd primes and also as a product of twin primes are discussed. Actually, a new formula is discovered to find all the solutions of the congruence. It is found that the method is simple and takes less time as compared to the existed method. A comparative study is made by giving suitable numerical examples.