How far a number is from 0, it is always a positive number. so absolute value of -7= l-7l= 7 since it is 7 digits from 0. Watch out for trick questions such as -l8l because the absolute value is 8, but then you multiple it by -1 for the - sign.
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The idea is to: * Replace "x" by "4" in -2x * Do the calculations * Take the absolute value
Jean-Robert Argand came up with the idea of absolute value, although he specifically meant complex absolute value. On the other hand Karl Weierstrass came up with the notation | x |.
It may also be zero. This is because of the way the absolute value is defined. The idea is, precisely, to get rid of the minus sign.
The absolute value is when even if a negative number when put in absolute value signs is positive such as.. l-23 l the absolute value is 23. l..l are absolute value signs
The absolute value of something is its difference from 0. Absolute value of -607=607