Do all quadratic relations of the form y=ax^2+bx+c have two zeros

In which two days did the spread of enlightenment thought contribute to the french revolution

Which statement in the passage best reflects sumer's opinion of the dred scott decision? a."i speak what cannot be denied." b."[the] judgment was sustained by a falsification of history." b."the opinion was more thoroughly abominable than anything history." i speak what cannot be denied when i declare that the opinion of the chief justice in the case of dred scott was more thoroughly abominable than anything of the kind in the history of courts. judicial baseness reached its lowest point on that occasion. you have not forgotten that terrible decision where a most unrighteous judgment was sustained by a falsification of history. -charles sumner, 1865

Which aspect of the postwar era did jazz’s liveliness, looseness, and improvisation most reflect?