If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2x^2-28x-102=0
a = -2; b = -28; c = -102;
Δ = b2-4ac
Δ = -282-4·(-2)·(-102)
Δ = -32
Delta is less than zero, so there is no solution for the equation
| 16g-6=106 | | 14+9x=2x+56 | | 16g-6=120 | | c-(2.3)=-5.1 | | c-2/4=-5/3 | | 4c−9=11 | | 2|y+1|=8 | | 2c−18=–2 | | 5x-2.25=10 | | 15=×+11y | | n/–1+4=7 | | n/–1+ 4=7 | | 8+v(2v–3)=13 | | x^2-8x+80=x | | 47*x=28 | | x-0.4x=80 | | 3y/5=10-2y/3 | | 4y-8-2=16y-4-2y | | 9u-27=7u-19 | | -6=-6y+4(y+2) | | M.302+12m=278 | | H(-17)=|x+15|| | | -.66(x-9)=3 | | X.25-3x=40 | | -0.8(5x-10)=200 | | (1)/(2)(8p+2)=9 | | -0.8(5x-10=200 | | 0.8(5x-10)=200 | | x=1/100+1/100+1/150 | | X.13-4x=65 | | 3–x+5=2x–7 | | 8x-3x(2x+5)=13 |