If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-2w^2-6w+80=0
a = -2; b = -6; c = +80;
Δ = b2-4ac
Δ = -62-4·(-2)·80
Δ = 676
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}$$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{676}=26$$w_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-6)-26}{2*-2}=\frac{-20}{-4} =+5 $$w_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-6)+26}{2*-2}=\frac{32}{-4} =-8 $
| -z=-7/8 | | A(x-3)+5(-x+3)=0 | | (x/4)+5=11 | | -2k^2+7k-5=0 | | X+2=13x=11 | | X+2=13.x=11 | | 2/5x-4=1/3x+1 | | 1x-2=85-x | | 5x+30=6x+20 | | 5=45/n | | 20/f=2 | | 5=30/j | | 5.6=m-6.6 | | 21=u-5 | | 3+15=2x+25 | | C=23h+78 | | x^2+25=64 | | 2p-36=62 | | 4(x+2)=6x–8 | | -(a−3)+2a=−2. | | 8c−7(c−3)+4=−16. | | 8c−7(c−3)+4=−16 | | 17−20−9k=–13−10k | | -7k-5k=6/5 | | 3=5x+50 | | (3)=5x+50 | | -2y-8y=5/2 | | 2x+22=148 | | 8^x-1=2^2x+8 | | -16t^2+84t+20=0 | | -16t^2+84t=0 | | 16c2−28c+9=-4c−4c |