If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5b^2-2b-7=0
a = 5; b = -2; c = -7;
Δ = b2-4ac
Δ = -22-4·5·(-7)
Δ = 144
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}$$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{144}=12$$b_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-2)-12}{2*5}=\frac{-10}{10} =-1 $$b_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-2)+12}{2*5}=\frac{14}{10} =1+2/5 $
| x/4+6x/7=31 | | -13+5e=-3/4 | | 3s2-4s=2 | | 2-2t=3t+17 | | X+2x+3x=2940 | | 7x-3x+3x=28 | | X+2x+3x=2,940 | | 2b+10=7b | | 17-4x-5=3x-x | | 13n2-117=0 | | 6x^2=1-2x | | m2-4m=-4 | | 20=b/0.2 | | 12=5d=7 | | 475=241.33+2.218(x) | | 18c+35=68 | | 2^4x=20 | | 2x(x-2)-4x=8 | | 355=188.6+2.08(x) | | 1500=p(1+0.05) | | .5y=y-12 | | 2y=y-12 | | 0.5y-y=12 | | 3x2+4x=10 | | 6x-2x=2x+10 | | 2/3y-9=7 | | 4x-14+7x-5=8x-10 | | 4x-14+8x-10=7x-5 | | 8x-10+7x-5=4x-14 | | x^2+2x-450=0 | | x^2+4x-450=0 | | 5b2-10=0 |