In mythology, a Life-death-rebirth deity is one who dies and is reborn, in a literal or symbolic sense. Often, the "death" was simply a visit and return to the underworld. Usually, s/he is worshipped primarily for this reason, and is often the subject of a mystery religion. They are associated with immortality, youth and redemption. Some of the most famous include Jesus Christ, Mithras, and Persephone (the object of the famed Eleusinian mysteries.
... are also called 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 ...