If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2+66x-4356=0
We add all the numbers together, and all the variables
x^2+66x-4356=0
a = 1; b = 66; c = -4356;
Δ = b2-4ac
Δ = 662-4·1·(-4356)
Δ = 21780
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{21780}=\sqrt{4356*5}=\sqrt{4356}*\sqrt{5}=66\sqrt{5}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(66)-66\sqrt{5}}{2*1}=\frac{-66-66\sqrt{5}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(66)+66\sqrt{5}}{2*1}=\frac{-66+66\sqrt{5}}{2} $
| 0-(x^2+9*x-2)=0 | | 2/5(c-2)=1/10(c-1) | | 117x^2-324=0 | | -14x=x-60 | | 3(y-5)-5y=13 | | -3(x-4)=-9(x-1) | | 2x^2/1x=20 | | 3z/10+9=-1z= | | x*0.16=50 | | 6x-11=-59 | | 1+4x+5x=10 | | 3(2x+4)=3x-9 | | 15y+8=20y= | | 7+3(1-x(1))=5-2(3-4(1)) | | -2r=2(r-2) | | 5x+20=10x+1 | | 4(12-2z)=3(2z+9) | | 2p^2-4p-48=0 | | 25w-12.75=114.25 | | 4x^2/2x-8=12 | | 25w+12.75=114.25 | | 4x^2/2x-8=20 | | 12.75w-25=114.25 | | H(2)=10x-9 | | 9m-(3+7m=) | | r/6=-5/2 | | 4(p-3)=12 | | H(-9)=10x-9 | | -7=r+(-12) | | m^2+23m-22=0 | | X+4y-22=0 | | 16n=11 |