1.696=4x^2

Solution for 1.696=4x^2 equation:

1.696=4x^2

We move all terms to the left:

1.696-(4x^2)=0

a = -4; b = 0; c = +1.696;
Δ = b2-4ac
Δ = 02-4·(-4)·1.696
Δ = 27.136
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{27.136}}{2*-4}=\frac{0-\sqrt{27.136}}{-8}
=-\frac{\sqrt{}}{-8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{27.136}}{2*-4}=\frac{0+\sqrt{27.136}}{-8}
=\frac{\sqrt{}}{-8}
$