(1) [[$ -3 x^2 -2 x +5 = 0 $]]

(2) [[$ 3 x^2 - x -4 = 0 $]]

(3) [[$ -2 x^2 +4 x -2 = 0 $]]

(4) [[$ x^2 -4 x +3 = 0 $]]

(5) [[$ 3 x^2 - x -4 = 0 $]]

(6) [[$ 3 x^2 -4 x +1 = 0 $]]

(7) [[$ x^2 +4 x -5 = 0 $]]

(8) [[$ -4 x^2 +4 x -1 = 0 $]]

(9) [[$ 3 x^2 + x -2 = 0 $]]

(10) [[$ 3 x^2 +2 x -5 = 0 $]]

(11) [[$ x^2 +4 x +3 = 0 $]]

(12) [[$ -3 x^2 +5 x +2 = 0 $]]