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posted by kate on Sunday, September 18, 2011 at 1:58am.

Solve the inequlity x^2>16 and give the answer in interval notation.

x^2>16 <=> ±x>4 <=> +x>4 or -x>4 <=> x∈(4,∞) or x∈(-∞-4) <=> x∈ (-∞,-4)∪(4,∞)

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