If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n^2-3n+8=0
a = 1; b = -3; c = +8;
Δ = b2-4ac
Δ = -32-4·1·8
Δ = -23
Delta is less than zero, so there is no solution for the equation
| 0.5/6=m/9 | | 11-8c=-5 | | 124+y=88 | | 80/40=30/x | | (6x+17)=(8x-17) | | 5a-a^2-4=0 | | (D2-4D+4)y=0 | | D2-4D+4y=0 | | 2(3-x2)=8 | | 5(v+9)=75 | | 4×(x-3)=24 | | 8(j-85)=56 | | -8=j/4-12 | | 4+8k=84 | | 8(x+4)=3x-8 | | 10x-6=-21 | | 23=3x2-2 | | 3r-16=23 | | 18r+3=24r+8 | | m²-2m=0 | | 0.08(x+1000)=3520 | | 18r+13=24r+3 | | 6y^2-15y+6=0 | | -(13+y)=-19 | | −9=6+2x | | h(3)=400-16(3^{2}) | | 6(y-9)=12 | | 15m+20=12m+21 | | 15m+12=12m+21 | | 7r+18=10 | | 8(x+8)=3-8 | | -2/3n+1/3=5/6 |