If it's not what You are looking for type in the equation solver your own equation and let us solve it.
y^2-11y+31=0
a = 1; b = -11; c = +31;
Δ = b2-4ac
Δ = -112-4·1·31
Δ = -3
Delta is less than zero, so there is no solution for the equation
| 19=-0.4x+72 | | 1/8k-5=3/8k+5 | | -15.25(x-5)=-30.5 | | -9(v-91)=-45 | | 3.63-6.8s=-6.61-8.4s | | 12-x=3+2x | | 4p-3=9p= | | 15u-35=10u | | 2x-1.1=4.9 | | -4(5b+2)=32 | | 4n=16= | | 4-3x+5=-8-7x+5 | | 80=23–3v | | 4(3x−5)=40 | | 2+6u=7u+9 | | 32+90+3x+8=180 | | 3(x-8)+6(2-x)-(x-2)=x | | 4–3x+5=−8−7x+5 | | 4y=-93 | | 0.005*x=200 | | 4(3b+1)= | | 5+8d=-7d-5-5 | | 9x-8=28=20 | | 7x-29=x | | x+14x+13=15 | | 5(c-17)=-25 | | 5x=-4x-7 | | √y+12=18 | | 8x/2x=8 | | 18=4(p+4)−–6 | | -2-v=-2v-10 | | 21+m=7 |