If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-.5x^2+40x-300=50
We move all terms to the left:
-.5x^2+40x-300-(50)=0
We add all the numbers together, and all the variables
-0.5x^2+40x-350=0
a = -0.5; b = 40; c = -350;
Δ = b2-4ac
Δ = 402-4·(-0.5)·(-350)
Δ = 900
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{900}=30$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(40)-30}{2*-0.5}=\frac{-70}{-1} =+70 $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(40)+30}{2*-0.5}=\frac{-10}{-1} =+10 $
| -28x-21=-2x-12-1 | | 49p=19p | | x3-2=-18 | | 4y19=15 | | 2/z+5=3 | | 7(b+59)=35 | | 10p+9-11-p=(2p+4)-3(2p-2) | | -6(1-5)2=x | | -7(y+2)=-5y-4 | | -8x+8-2x=88 | | -2m+6=-(4=2m) | | (4x-8)=(2x+8) | | -k=43 | | -3=-5r+4r | | 8x-12=-2x+8 | | r-8=62 | | 16w-24=160 | | -55=3n+4(n-5) | | 6r^2-5r-14=0 | | 5r+(3r-1)=-46 | | T=4s+1 | | -25x-5=7 | | 9x-4-3x+2=90 | | -9y=46 | | -18+19q=q-20+18q | | 3(2x-1)=2(2x+5) | | -16x^2+96x+2.5=0 | | -11=-2+b | | 23-3+12x+8=180 | | -2(x+6)=-3(x+4) | | 3(-4r+r)=27 | | 16w+24=160 |