absolute value
posted by Kieran .
when you are solving an equation involving absolute values, do you have to have both negative and positve solutions??
not necessarily, it depends on the equation.
e.g.#1
│2x1│ = 5
then (2x)=5 or (2x1)=5
x=3 or x=2
here you have a positive as well as a negative solution.
e.g.#2
│112x│ = 5
(112x) = 5 or (112x) = 5
x=3 or x=8
both solutions are positive.
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