Question

what is the lines used for like |-25| ,what the meaning of the vertical like lines,what is it called, how is it used​

Answer 1

Answer:

These are the lines called modulus operator.

They make the number within this sign | x | to be positive.

i.e.| -24 | = 24

and | 24 | = 24

Answer 2

Answer:

the answer is modulus and its work is to change sign of the number that is if it contains a positive number then it becomes negative on removing the modulus sign and if it's a negative I changes into positive

Step-by-step explanation:

if I am able to understand you then I would feel proud for that.