The discriminant tells us there are two roots when positive, one root when zero, and no roots when negative. b^2-4ac = (-8)^2-4*3*1 = 52 is positive, so there are two roots. The discriminant is just part of the quadratic equation. The quadratic equation gives us the exact real number roots of any equation in the form ax^2+bx+c=0. The quadratic equation is x = (-b \pm sqrt(b^2-4ac))/(2a), where \pm means that we have two values, one using + (addition) and one using - (subtraction). Let D = b^2-4ac.
RE: what is the difference between database and data w... Database is the place where the data is taken as a base and managed to get avialable fast and efficient access. Dataware house is the place where the application data is managed for analysis and reporting purposes.
Companies often store goods in a warehouse. A warehouse is a building where goods are stored. Warehouse inventory is cataloged so the company knows what is in stock. Some warehouses' inventory control may be completely automated, while others keep physical records.View slideshow of images above. warehouse is a building where goods are stored. Warehouse inventory is cataloged so the company knows what is in stock. Some warehouses' inventory control may be completely automated, while others keep physical records. View slideshow of images above.