what is |x|

Question

I cannot remember what the | | around a number represent for the number

Answer 1

5429816051 * (X) = 11,097,078,388

Answer 2

it is the absolute value, so no negative number affect the awnser, as any negative awner cancels, and turns to a postive.

example:

y=|x|

x=-5,    y would = 5