using quadratic equation 9x^2-3X-2=0 please help

I am struggling with this formula. The last part confuses me and leaves me frustrated!
in Statistics Answers by Level 1 User (120 points)

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1 Answer

9x^2 -3x-2=0

quadratik equashun giv roots=

0.66666666666 & -0.333333333

-b/2a=0.1666666666, b^2-4ac=81, sqrt(81)=9, 9/21=0.5
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