Solve equation by the quadratic formula. List the solutions, separated by commas.
3
r
2
−
r
+
17
=
9
\displaystyle {3}{r}^{{2}}-{r}+{17}={9}
3
r
2
−
r
+
17
=
9
r
\displaystyle {r}
r
=
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\displaystyle
Enter your answer as a list of complex numbers in a+bi form separated with commas. Example: 2+5i,-3-4i
Enter each value as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity