If it's not what You are looking for type in the equation solver your own equation and let us solve it.
s^2-4s+8=0
a = 1; b = -4; c = +8;
Δ = b2-4ac
Δ = -42-4·1·8
Δ = -16
Delta is less than zero, so there is no solution for the equation
| x+26=-5 | | 6x=5(x+10)-2 | | 25x-5x=-19-x | | X+4=2x-20 | | 17-x=2x-3(x-4) | | 15-5=2x-x | | x+13=2(x+4)-x | | 19x+11=6x-15 | | -2.1x=63 | | 20*(1.05)x=50 | | 4x-32=-50+2x | | 16+2x=12-6x | | 22x-6=2x+14 | | 3/5x+1=1/2 | | 3a=2a+9 | | 12(v-6)=132 | | 12(v-6)=32 | | 0.75x-1850=0.65x | | 7(6-3x)+6(3+2x)=57 | | 7(6-3x)+6(3+2x=57 | | 11.3x-5.2=1.3x+7.4 | | 5(h+2)=(h-1) | | 6y-7=3y+10 | | 2/(x-1)=6/(x+1) | | (x-5)/(2x-1)=-4 | | (x+8)/3=x+4 | | (4x+2)/6=-3 | | (x+2)/6=-3 | | (x*14)+17=(x*6)+105 | | x^2+30x-223=0 | | 3x+3/4x=36 | | 3+t=t-1 |