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.
1. Get help from a doctor now âº. Varies: An attack can last from a few hours to days, depending on how well and how soon it is treated. Inflammation and bronchoconstriction (narrowing of the airways) need to be addressed in an exacerbation-the former with systemic steroids and the latter with bronchodilators (ex.Albuterol).et help from a doctor now âº. Varies...: Asthma exacerbation can last for a few minutes to a few days to weeks depending on the degree of bronchospasm and inflammation and how it responds to routine therapy. The earlier in the exacerbation a person seeks help, the sooner it typically responds.