If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-x2+7x-100=0
We add all the numbers together, and all the variables
-1x^2+7x-100=0
a = -1; b = 7; c = -100;
Δ = b2-4ac
Δ = 72-4·(-1)·(-100)
Δ = -351
Delta is less than zero, so there is no solution for the equation
| m/7=3,m= | | 5t-4t-t+3t=15 | | 11s=88,s= | | 18g-1=15+17g | | –3n=–4−2n | | 5/f+7=-3 | | 4x-2+8=12 | | 3n+20-n=10 | | 100+50+2x=180 | | 20w+3w-6w+3w-19w=19 | | 3y+4y=26-12 | | X^2+3x+24=12 | | 0.75(8=e)=2-1.25 | | 9/w=25/100 | | 5(x-1)1=2x+4(x-1) | | -4(w+1)=(-24) | | 11x^2-16=-16x+6x^2 | | (9(x+2)-6)=19x | | 4. 3000–x=999 | | 3x+48+(x+32)=180 | | 13z-13z+5z=10 | | 6x/18=81 | | -4(3g-2)+g=18-2(g+8) | | 2y+2y=63 | | 2x3=x+13 | | -4=17(3)+b | | 4-9h=-68 | | x+7=7x+1 | | 36-48v=-7v^2 | | 17^2+17^2=x^2 | | y+3/3=3 | | -6z-4=-40 |