Rapping is one part of hip hop music, which also includes DJing. Frequently, performing and recording groups are composed of both rappers and DJs. In the list below, all members of groups are given for the sake of completion, even though some are not rappers or rap only rarely.
... the roots of the equation. The formula reads
<math>
x=\frac{-b \pm \sqrt {b^2-4ac}}{2a}
</math>
The term b2 – 4ac is called the discriminant of the ...