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.
Answer by jaime24 (744). A rash from an allergic reaction to medicine should not last for more then 2 days. If it does you will need to seek medical attention, because it could be more serious then some cases though, a reaction can be bad enough to stay for a couple of weeks.nswer by Antony (169). Allergic reactions to Medicine are tricky. We can't predict how long it will take,may be a week. Better you should consult a Physician and follow the instructions will solve this problem.