If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x^2+8.71x-0.0004=0
a = 1; b = 8.71; c = -0.0004;
Δ = b2-4ac
Δ = 8.712-4·1·(-0.0004)
Δ = 75.8657
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(8.71)-\sqrt{75.8657}}{2*1}=\frac{-8.71-\sqrt{75.8657}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(8.71)+\sqrt{75.8657}}{2*1}=\frac{-8.71+\sqrt{75.8657}}{2} $
| p/6−22=-20 | | 9(n-83)=81 | | p6− 22= -20 | | 13=145=11q | | 4h+7=43 | | 128/7=3x+3/7x+8 | | 7(r-95)=42 | | 8x-3x+7=2+5-14x | | x+x^2+x3=543.192 | | q/8-4=2 | | g/3+51=60 | | 6=22-4n | | 27-3f=12 | | 7c+8=57 | | 10x^2=1620 | | 41=z/10+38 | | 6x+10=29/5 | | 27–3f=-12 | | 7-6=3(5-2d) | | 79=7=9f | | 7x+1=90-40 | | -k-5k=-4 | | t-82/4=4 | | r/4-5=1 | | -5(q+-12)=85 | | 3=m-55/8 | | v+31/7=8 | | 5x+8x=3 | | 5x-10=15-83x+12x | | 5x+1=2x^2+9x | | (4/x)+7=19 | | 3(m-81)=3 |