This video lecture from Quadratic Equations (F.Sc. first year Mathematics) covers: The solution of exercise no 4.7. The use of a simple check from the coefficients of the standard quadratic equation is appreciated by its application. The nature of the roots i.e. real, complex, equal and distinct etc is discussed in detail. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.