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.
Bronchiolitis does not respond to antibiotics. Expected Course. Bronchiolitis usually starts with a runny nose and congestion. Within 2-3 days, the patient starts coughing, wheezing, and potentially breathing hard. The wheezing and tight breathing usually become worse over 2-3 days and then begin to improve. Overall, the wheeze may last up to 7 days, and the cough up to two weeks. The most common complication (which occurs in about 20% of infants) is an ear infection.