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Points $A$ and $B$ are on parabola $y=3x^2-5x-3$, and the origin is the midpoint of $\overline{AB}$. Find the square of the length of $\overline{AB}$.

michaelcai  Jul 26, 2017
 #1
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Perhaps this graph will help:

 

.

Alan  Jul 26, 2017

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