If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X2+11X+84=0
We add all the numbers together, and all the variables
X^2+11X+84=0
a = 1; b = 11; c = +84;
Δ = b2-4ac
Δ = 112-4·1·84
Δ = -215
Delta is less than zero, so there is no solution for the equation
| 3p-4=-3 | | (5x)+140=180 | | 9x=35+4(x+3) | | -13-4n=39 | | 5-3y=-7y+49 | | 7(+1)=2x+57 | | 3x=8/2x-4/2 | | -26+2t=-2 | | .6=x/9.6 | | x/9=-81 | | (1+7x)=6(-7-x)=36 | | 2x+10+4+5x=67 | | 3/4=-1/2y | | 4(9y-5)=10(3y=17)-40 | | m/16=-8 | | 4(9y-5=10(3y=17)-40 | | -(1+7x)=6(-7-x)=36 | | (7x-8)(-1)=26 | | 14=-k/8 | | -8j=-56 | | 6-5-4x=1-4x | | 6^x=82 | | -91=7h | | 3(x-4)+3=3(x+4) | | 22(y-1)=2y+38 | | 500=5x-100-2x | | 6x+1-4x=5-9 | | 6(x+1)-4x=5-9 | | 150=-3(-2+6p) | | 0.95=t/3 | | -11=k+7-4k | | 17a+a-18a+a=5 |