Answer
$\frac{3\pm 2\sqrt 3}{3}$
See graph.
Work Step by Step
Step 1. $-3x^2+6x+1=0 \longrightarrow x=\frac{-6\pm\sqrt {36-4(-3)}}{2(-3)}=\frac{3\pm 2\sqrt 3}{3}$
Step 2. See graph.
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