When working with inequalities what do you do when its x squared > 16 and vice versa does the sign flip.
2 answers:
Answer:


Step-by-step explanation:



The interval notation will be:

The contrary,

is 
No it doesn't flip. You split into two possible cases with two separate inequalities.
x^2 > 16
| x | > 4
And since now you are working with an absolute value, you split into 2 possible cases.
if x >= 0: then x > 4
if x < 0: then -x > 4
x < -4
FOR THE FIRST:
x ∈ (4, + ∞)
FOR THE SECOND:
x ∈ (-∞, -4)
Their UNITY is: x ∈ (-∞, -4) U (4, +∞)
And that's how you go about solving these. Hope I helped! :)
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