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1981

Centuries: 19th century - 20th century - 21st century

Decades: 1930s 1940s 1950s 1960s 1970s - 1980s - 1990s 2000s 2010s 2020s 2030s

Years: 1976 1977 1978 1979 1980 - 1981 - 1982 1983 1984 1985 1986


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Quadratic formula

... two solutions are complex conjugates of each other. (In this case, the parabola does not intersect the x-axis at all.) Note that when computing roots numerically, the ...

 
 
 
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