SOLUTION: S solve the quadratic equation by completing the square 3r^2+2r-2=0

Question 723561: S solve the quadratic equation by completing the square 3r^2+2r-2=0
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!

third term = (1/2 co efficient of middle term)^2

=((1/2) (2/3))^2
=1/9

Take square root
r+(1/3) = +-sqrt(7)/3
r= (-1+sqrt(7))/3
OR
r=(-1-sqrt(7))/3

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