If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2x+x2=65
We move all terms to the left:
2x+x2-(65)=0
We add all the numbers together, and all the variables
x^2+2x-65=0
a = 1; b = 2; c = -65;
Δ = b2-4ac
Δ = 22-4·1·(-65)
Δ = 264
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}$$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$
The end solution:
$\sqrt{\Delta}=\sqrt{264}=\sqrt{4*66}=\sqrt{4}*\sqrt{66}=2\sqrt{66}$$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2)-2\sqrt{66}}{2*1}=\frac{-2-2\sqrt{66}}{2} $$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2)+2\sqrt{66}}{2*1}=\frac{-2+2\sqrt{66}}{2} $
| 39=-9=4m | | -4x+1/2=6x | | 30-+a=-9= | | v2+10=12 | | 220=140-u | | 4.1g+10=2.1g+16 | | 6+6p-5p=8= | | 2+2f=18 | | 9x-5+2x+3=31 | | -13=3k+3+2= | | 6-5v8v=10+3v-4 | | -6=-6w+3(w+5) | | 2x5=10/3 | | 4x-3x=1= | | 18=2(6+2y) | | 4.3g+8=1.3g+17 | | 5n+5+4=14= | | -7=7s+8 | | 30x-2x=56 | | 8x-6x=-14= | | z+(-15)=3 | | 7x+12=4x+13+2x+20 | | -19=7x+3-1= | | 1x-8=1X-8 | | 6/5=x-10/10 | | -6=6w+3(w+5) | | -x-57=-112 | | a-4.8=0.33-5.4a | | 10y=100000000 | | 19.4x0.27=11 | | 16=(1/2)4(3+b^2) | | -16=4(v-5) |