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.
RE: How Long does Anxiety attacks last? Ive had anxiety/panic attacks starting last sunday, in the past week its been constant, not in the panic form but more in a relaxed but yet tense feeling.I still tlak to to people do my evryday things, laugh think things are funny, in the having trouble breathing, heart is messed up rapid haeartbeats etc.,...ating Newest Oldest. Best Answer: an anxiety ATTACK is an unbearable feeling like you're going to die - - you cannot do everyday things and talk to people reguarly durings a panic attack. no, an attack itself can not last a week.