If it's not what You are looking for type in the equation solver your own equation and let us solve it.
7b^2-31b+20=0
a = 7; b = -31; c = +20;
Δ = b2-4ac
Δ = -312-4·7·20
Δ = 401
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-31)-\sqrt{401}}{2*7}=\frac{31-\sqrt{401}}{14} $$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-31)+\sqrt{401}}{2*7}=\frac{31+\sqrt{401}}{14} $
| 1x-3=-4 | | f+137=4 | | m/3-3=5 | | -6b+14=24 | | 3-3x=7x+4 | | 3x=‘54 | | 3x–5=13 | | 2x^2+3x-420=0 | | 6d−5d+3d=12 | | 15=v/2+12 | | 3x=(6x-10) | | 13=p/3+9 | | 3p+7p-4=76 | | x0.004=40 | | 13=p3+9 | | 13=p3+ 9 | | 2(2x–5)–10=40 | | F(x)=-4x²-8x | | 63=3u+4 | | 3x-66=14x | | -4-3x=-2x–3 | | x0.3=300 | | 10/10+x=35/65 | | 72-2m3=-56 | | 72−2m3=−56 | | 5w+11=4w | | -1,1x–3,4=2,1x-10,4 | | 2(4x-4)=7(x+3 | | 9x+38=57+10x | | 53+58+x=180 | | 0.5s-1=2+s | | -7x-22=-4x-52 |