If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8x-x^2=85
We move all terms to the left:
8x-x^2-(85)=0
We add all the numbers together, and all the variables
-1x^2+8x-85=0
a = -1; b = 8; c = -85;
Δ = b2-4ac
Δ = 82-4·(-1)·(-85)
Δ = -276
Delta is less than zero, so there is no solution for the equation
| F(x)=5x^2+3x-8 | | 241/2=t+51/4 | | -x-(2x+1)=8-(3x+3) | | 438=x10 | | 75h+350=100h+200 | | 2(x-5)+3=5x-13 | | -2(x-5)+4=-4(2x-4 | | 8-7x-4=-6+3x-10 | | 67x-23.96=79.15 | | 12^4x=256 | | X^3+6x^2-15x+4=0 | | 3(-0.3+2.6y)-3=8y-4 | | 3x-31=5-3x | | 2/5•h=-20 | | -16t^2+32t+2=0 | | -16/9=-4/3(5/3n) | | (x+42)+(2x+21)=180 | | -0.7=6.1/y | | B2+15=-8b | | (12x-3)(2x+4)=0 | | 0=-16t^2+9t+10 | | -16/9=(-4/3(5/3+n)) | | 3/4(3x+8)+16=32/3 | | -1.2=4.2x | | 3/5=5x/5 | | K2+9k=-8 | | 52+9k=-8 | | 6(x+30)=20 | | 84=4*9*2+2*2*h | | 9/(x-3)=14 | | 1x^2-1x-1=0 | | n2=-9n-20 |