0.04x^2-169=0

Solution for 0.04x^2-169=0 equation:

0.04x^2-169=0

a = 0.04; b = 0; c = -169;
Δ = b2-4ac
Δ = 02-4·0.04·(-169)
Δ = 27.04
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{27.04}}{2*0.04}=\frac{0-\sqrt{27.04}}{0.08}
=-\frac{\sqrt{}}{0.08}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{27.04}}{2*0.04}=\frac{0+\sqrt{27.04}}{0.08}
=\frac{\sqrt{}}{0.08}
$