If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-0.1x^2+4x-30=0
a = -0.1; b = 4; c = -30;
Δ = b2-4ac
Δ = 42-4·(-0.1)·(-30)
Δ = 4
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$$\sqrt{\Delta}=\sqrt{4}=2$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-2}{2*-0.1}=\frac{-6}{-0.2} =+30 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+2}{2*-0.1}=\frac{-2}{-0.2} =+10 $
| 3^x^2+1=1/9 | | 6y+7=3y+13 | | -0.1x^2-4x+30=0 | | 4.9x^2-349x+122.5=0 | | 3^(x²+1)=1/9 | | -9=w+5/4 | | 2=12=5k | | -10*8k=-70 | | 2t+28=t | | z=2z-7 | | 2a×3a^2=0 | | 10=3q-13 | | 5y-2=37+10 | | 3(4w+10)/5=5 | | 8(2t+4)=-128 | | 4x63-8x^2-11x-3=0 | | x-10=4x | | -10(s+3)=-17 | | 3(b+2)=1 | | x+1=4/x+1 | | -2x+-18=-24+16x | | x(-2x-5/3)=2-x/2 | | x=150+1500(200-200)=0 | | -0,33x2=x-6 | | 150x-1500=0 | | 5(f-10)=-5 | | 9x-101=6x-14 | | n^2+8n-16=0 | | 4(4w+2)/3=1 | | 4(x-2)=1/3 | | -3(2t+1)=3 | | 4.9x^2-10x-200=0 |