If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-10x^2+2x-1=0
a = -10; b = 2; c = -1;
Δ = b2-4ac
Δ = 22-4·(-10)·(-1)
Δ = -36
Delta is less than zero, so there is no solution for the equation
| 3x-4+8+x=2x+3-5 | | .02*x=1320 | | -12x^2-260x+1000=0 | | 7.9x+19.7=2.4x+6.5 | | 8.7x+24.3=4.2x+1.8 | | 3(a+22)-12=12a | | -7x+0=9 | | 6x-46=5x-24 | | 6y2-5y+2=0 | | 2x4+4x=15 | | 2f^2-17f+8=0 | | 2m^+9m-5=0 | | 2m^-5m-18=0 | | 30+p=25+ | | 2/x+1/3=1/5 | | 5p+10=4p-17 | | K^2+11k+18=7 | | 2x.23=7x-2 | | p/6=8=9 | | 1+4e=5e+3 | | -2(3r+)=-5r-8-r | | 5e=e+4 | | 2/3*x+1.5=0 | | e+3=2e | | 20x-29900=0 | | (2x-3)/4=-3(2x+4) | | (5v-1)(6+v)=0 | | (x-9)(2x+25)=0 | | 3/4(8r+12)=3 | | 12.5=2x^2 | | 1.25p=25 | | -2+7p=-9 |