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Question 150413
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Answer by
mgmoeab(37)
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You can
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Just go by the definition:
|x| = x, x>=o
|x| = -x, x
Solution:
|x-7|>=2
a) if x>=o
then,
x-7>=2
x>=9
b) if x
then,
x-7<=-2
x<=5
]-∞,5]U[9,+∞[ VALUES OF X.