u2=1.09

Solution for u2=1.09 equation:

u2=1.09

We move all terms to the left:

u2-(1.09)=0

We add all the numbers together, and all the variables

u^2-1.09=0

a = 1; b = 0; c = -1.09;
Δ = b2-4ac
Δ = 02-4·1·(-1.09)
Δ = 4.36
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$u_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{4.36}}{2*1}=\frac{0-\sqrt{4.36}}{2}
=-\frac{\sqrt{}}{2}
$
$u_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{4.36}}{2*1}=\frac{0+\sqrt{4.36}}{2}
=\frac{\sqrt{}}{2}
$