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those two lines next to x and 8 are integer marks

2007-01-11 07:28:53 · 3 answers · asked by Sophie - 1 in Science & Mathematics Mathematics

3 answers

Whenever you have an inequality of the form, |x| < k, that means
-k < x < k
Whenever you have an inequality of the form, |x| > k, that means
x > k or x < -k

|x+8| <= 2 is the first case above.
-2 <= x+8 <= 2
Subtract 8 from all sides
-10 <= x <= -6
Answer: [-10,-6]

2007-01-11 07:34:07 · answer #1 · answered by MsMath 7 · 1 0

they are absolut value signs

|x+8|=<2
x+8=<2 or x+8>=-2
x=< -6 or x>=-10
so x has to be smaller than -6 and bigger than -10 in other words:
x is an element of [-10,-6]

2007-01-11 15:37:53 · answer #2 · answered by ENA 2 · 0 0

ms math says it all

2007-01-11 15:38:06 · answer #3 · answered by physical 4 · 0 0

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