0=14x^2+1400-12600

Solution for 0=14x^2+1400-12600 equation:

0=14x^2+1400-12600

We move all terms to the left:

0-(14x^2+1400-12600)=0

We add all the numbers together, and all the variables

-(14x^2+1400-12600)=0

We get rid of parentheses

-14x^2-1400+12600=0

We add all the numbers together, and all the variables

-14x^2+11200=0

a = -14; b = 0; c = +11200;
Δ = b2-4ac
Δ = 02-4·(-14)·11200
Δ = 627200
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:

$\sqrt{\Delta}=\sqrt{627200}=\sqrt{313600*2}=\sqrt{313600}*\sqrt{2}=560\sqrt{2}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-560\sqrt{2}}{2*-14}=\frac{0-560\sqrt{2}}{-28}
=-\frac{560\sqrt{2}}{-28}
=-\frac{20\sqrt{2}}{-1}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+560\sqrt{2}}{2*-14}=\frac{0+560\sqrt{2}}{-28}
=\frac{560\sqrt{2}}{-28}
=\frac{20\sqrt{2}}{-1}
$