Twenty five X squared minus one hundred and forty four

OK.

- - Since it's the difference of two squares,

the factored form of that expression is

(5x + 12) (5x - 12).

- - We don't know the value of the expression

until you tell us the value of 'x'. And then, if

'x' changes, the value of the expression also

changes, immediately, without any delay.

Faster than the speed of light.