If it's not what You are looking for type in the equation solver your own equation and let us solve it.
X2+6X-221=0
We add all the numbers together, and all the variables
X^2+6X-221=0
a = 1; b = 6; c = -221;
Δ = b2-4ac
Δ = 62-4·1·(-221)
Δ = 920
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}$$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{920}=\sqrt{4*230}=\sqrt{4}*\sqrt{230}=2\sqrt{230}$$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-2\sqrt{230}}{2*1}=\frac{-6-2\sqrt{230}}{2} $$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+2\sqrt{230}}{2*1}=\frac{-6+2\sqrt{230}}{2} $
| 11w+56+69=180 | | 4-n=1/2(2n-8) | | 3w+22-7+30=180 | | 6h-8=12h+5 | | 9d13/10+8-4d/5=1 | | 1.8d+3=(0.9d-1.5 | | 29x+63+59=180 | | 19.5+0.5t=10.6206-4t | | X=100-1.5y | | 2u+56-35+33=180 | | 4w+45+43=180 | | 212=-(6-2)f | | 8.13=10^x | | 3x–6=18–3x | | 4x+4=25–3x | | p=3p+4 | | 3a-24+13+47=180 | | 2x+4=34–3x | | 4w+36+32=180 | | (-2/3)(x)-2=(-1/2)(x)-3 | | -2/3(x)-2=-1/2(x)-3 | | 4^(x-6)=2^(x+5) | | 3^(-x+1)=14 | | 3.5/x=0.05 | | 4^x-6=2^x+5 | | 4^x-6=2 | | F(x)=24x^2-46+21 | | 3^-x+1=14 | | x+0.80x=20000 | | 4(2x+2)-2(x+2)=7(x+2) | | 4(2x+2)+2(x+2)=10 | | 2.2/x=0.05 |