x+x2+x+350=2250

Solution for x+x2+x+350=2250 equation:

x+x2+x+350=2250

We move all terms to the left:

x+x2+x+350-(2250)=0

We add all the numbers together, and all the variables

x^2+2x-1900=0

a = 1; b = 2; c = -1900;
Δ = b2-4ac
Δ = 22-4·1·(-1900)
Δ = 7604
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:

$\sqrt{\Delta}=\sqrt{7604}=\sqrt{4*1901}=\sqrt{4}*\sqrt{1901}=2\sqrt{1901}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(2)-2\sqrt{1901}}{2*1}=\frac{-2-2\sqrt{1901}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(2)+2\sqrt{1901}}{2*1}=\frac{-2+2\sqrt{1901}}{2}
$