If the discriminant is a positive number, then we get two real. numbers as answers to the equation. One of the answers comes from following the + path on the. The other comes from following the â path.
Difference Between CDROM and DVD. DVDs and CDROMs are both optical storage devices that have a lot of use; the most prominent of which is the distribution of content like movies, music, software, and such. The biggest difference between a CDROM and a DVD is their capacity. A CDROM typically holds 700MB of data per disc while a DVD can hold 4.7GB on a single layer. Dual layer and double-sided DVD discs push this to a maximum of 17GB. This is also the main reason why the CDROM was superseded by the DVD. Another advantage of a DVD is its much faster data transfer speeds.
A standard 120 mm, 700 MB CD-ROM can actually hold about 737 MB (703 MiB) of data with error correction (or 847 MB total). In comparison, a single-layer DVD-ROM can hold 4.7 GB of error-protected data, more than 6 CD-ROMs.