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.
Rating Newest Oldest. Best Answer: The severity and length of an asthma attack varies from person to person. It is possible for a continuous asthmatic state to last for hours or even days. In some people with severe asthma symptoms, repeated inflammation alters the airways and leads to permanent airway obstruction.ating Newest Oldest. Best Answer: The severity and length of an asthma attack varies from person to person. It is possible for a continuous asthmatic state to last for hours or even days. In some people with severe asthma symptoms, repeated inflammation alters the airways and leads to permanent airway obstruction.