2/x +x 3 -2 = 2x -1 +x 3 -2. The first one isn't polynomial as it has a negative exponent and all exponents in a polynomial must be positive. To illustrate why the second one isn't a polynomial rewrite it a little.
The duration of an asthma attack can vary, depending on what caused it and how long the airways have been inflamed. Mild episodes may last only a few minutes; more severe ones can last from hours to days.Mild attacks can resolve spontaneously or may require medication, typically a quick-acting inhaler.More severe attacks can be shortened with appropriate treatment.ild episodes may last only a few minutes; more severe ones can last from hours to days. Mild attacks can resolve spontaneously or may require medication, typically a quick-acting inhaler. More severe attacks can be shortened with appropriate treatment.
Interestingly, panic attacks do seem to follow a specific pattern. Panic attacks tend to peak about 10 minutes in, and then go through a slow but steady decline that can last anywhere from 10 minutes to several hours.The resulting fatigue from a panic attack, however, can last the rest of the day depending on the severity of the attack.he disorders themselves can last the rest of your life or only a few days. Your ability to overcome the anxiety depends a great deal on the help you seek out and your willingness to commit to treatments. Anxiety attacks tend to be self-sustaining.