Im just making up a question so i can understand absolute values better. Can some1 explain pls? what is the answer for |x|=5? Would it be positive and negative 5? OR x=5 if x>0, x=-5 if x<0
x = 5 if x > 0 is a bit silly to say because 5 is clearly greater than 0 so "x = 5 if x > 0" is always true
you could say |x| = 5 x = 5 or x = -5
or you could say |x| = 5 x = +-5 to shorten things up
Because there was a question that says use the definition of absolute value to write the expression without absolute value signs
well the definition is if |x| = k where k is some positive number, then x = k or x = -k
|x+5| and that would be x+5 if x>0 -x - 5 if x<0
you could go that route if you wanted
ok thanks i understand absolute value better now :)
ok that's great
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