Ukraine is subdivided into 24 regions (oblasti, singular - oblast), 1 autonomous republic (avtomnaya respublika) in the Crimea, and 2 municipalities (mista, singular - misto) with regional status, marked by a *:
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<math>\pm \sqrt {b^2-4ac}</math>
in the formula should be understood as "either of those element(s) of the field whose square equals b2 - 4ac". In some ...