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238

Centuries: 2nd century - 3rd century - 4th century

Decades: 180s 190s 200s 210s 220s - 230s - 240s 250s 260s 270s 280s

Years: 233 234 235 236 237 - 238 - 239 240 241 242 243


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Quadratic formula

... that the parabola intersects the x-axis in two points.) If the discriminant is negative, then there are two different solutions x, both of which are complex numbers. The ...

 
 
 
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