algebra
posted by kate .
Solve the inequlity x^2>16 and give the answer in interval notation.

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