127.69=2x^2

Solution for 127.69=2x^2 equation:

127.69=2x^2

We move all terms to the left:

127.69-(2x^2)=0

a = -2; b = 0; c = +127.69;
Δ = b2-4ac
Δ = 02-4·(-2)·127.69
Δ = 1021.52
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{1021.52}}{2*-2}=\frac{0-\sqrt{1021.52}}{-4}
=-\frac{\sqrt{}}{-4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{1021.52}}{2*-2}=\frac{0+\sqrt{1021.52}}{-4}
=\frac{\sqrt{}}{-4}
$