If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-x^2+8x-3000=0
We add all the numbers together, and all the variables
-1x^2+8x-3000=0
a = -1; b = 8; c = -3000;
Δ = b2-4ac
Δ = 82-4·(-1)·(-3000)
Δ = -11936
Delta is less than zero, so there is no solution for the equation
| 7p^2-4p=40-3p^2 | | -x^2-8x-3000=0 | | 11x+12—8x=—3 | | x-27=-90 | | 10x^2-4x-40=0 | | x+6,6=23,4 | | (x+15)/14=53 | | 11,75+x=21,85 | | 0.9x+0.8=2.6 | | 49^x=7^2 | | x+8=10x-4 | | 142+x=210 | | 10x+5=6x+4 | | 5=4t+ | | x+9=25,7 | | 2/3x+(3-2x)^2/18-(2x-1)(2x+1)/18=x-5/3+x+4/6-5/9x | | 9x-25=7x+15 | | 9/17*x=15/34 | | 5x(2x-1)+10=7(2x-1) | | ((x+1)/(x+2))+((x+3)/(x+4))=(x+15)/(x^2+6x+8) | | 5^2x=7^x | | 16−3p=2/3+5 | | (2x+3)²+(x-3)²=9 | | 0.2x+0,4=0,3x+0,6 | | x(x+6)=8(x33 | | 15x+17x-28+22-10x=5 | | 6x-2x+1=5 | | x+3(x-2)+2=2x+6 | | 10p^2-4p-40=0 | | -2x-9+4x+5=10 | | -12x+30-3x=0 | | z^2-8^2+25=0 |