If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2+18x+11=0
We add all the numbers together, and all the variables
x^2+18x+11=0
a = 1; b = 18; c = +11;
Δ = b2-4ac
Δ = 182-4·1·11
Δ = 280
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{280}=\sqrt{4*70}=\sqrt{4}*\sqrt{70}=2\sqrt{70}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(18)-2\sqrt{70}}{2*1}=\frac{-18-2\sqrt{70}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(18)+2\sqrt{70}}{2*1}=\frac{-18+2\sqrt{70}}{2} $
| z+8.5=15. | | 28+x=100 | | 12(v-20)=-48 | | n+-22=27 | | 2n-35=77 | | 3(3b+3)=2b+30 | | X-1/3x=4 | | -4x2=-10 | | m−5/8=−1/4 | | 48=p-122 | | 3=(5c+1) | | 77x+1=102 | | x=12=19 | | Y=x(50-x) | | -4=6(x+2) | | (3x+20)^0+(4x-36)^0=180 | | 20=4(2a+3) | | 18j=252 | | 8+⅘b=9/10b | | d+690=856 | | 235.5=1/3*3.14*r^2*9 | | 1/6r=4 | | 2(v-20)=-48 | | q/27=16 | | 14=2x−4 | | 14=2z−4 | | 29u=725 | | 4=|c/2| | | -5=-1+9z | | 4a-3=8a-6 | | n+2/5-3=7 | | 19=p/29 |