If it's not what You are looking for type in the equation solver your own equation and let us solve it.
12x^2+10x+6=0
a = 12; b = 10; c = +6;
Δ = b2-4ac
Δ = 102-4·12·6
Δ = -188
Delta is less than zero, so there is no solution for the equation
| 15x2+20x-11=0 | | 16x2+2x-6=0 | | 17x2+7x+9=0 | | 9x2-11x-17=0 | | 15x2-12x-10=0 | | 16x2-18x-2=0 | | 7x2-19x-1=0 | | 14x2-16x-5=0 | | 5x2-19x-7=0 | | 2x2+3x-13=0 | | 17x2-20x-10=0 | | 7x2-16x+10=0 | | 16x2+14x-20=0 | | 17x2+12x+15=0 | | 15x2-15x+14=0 | | 20x2-16x-14=0 | | 19x2+5x-1=0 | | 20x2+11x-17=0 | | 11x2+5x+5=0 | | (3x-15)(7x+21)=0 | | 10x2-15x-11=0 | | 5x2-3x-9=0 | | 17x2+19x-12=0 | | 20x2+x-11=0 | | 11x2+2x-8=0 | | x+50+10-x=90 | | 9.5x-0.05=10.5x+1.05 | | -x2+11x+480=0 | | 5x2+14x-2=0 | | 8x2+20x-8=0 | | 8x2+17x+8=0 | | 4x2-11x-12=0 |