0.0066a^2+0.14A-35=0

Solution for 0.0066a^2+0.14A-35=0 equation:

0.0066a^2+0.14-35=0

We add all the numbers together, and all the variables

0.0066a^2-34.86=0

a = 0.0066; b = 0; c = -34.86;
Δ = b2-4ac
Δ = 02-4·0.0066·(-34.86)
Δ = 0.920304
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{0.920304}}{2*0.0066}=\frac{0-\sqrt{0.920304}}{0.0132}
=-\frac{\sqrt{}}{0.0132}
$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{0.920304}}{2*0.0066}=\frac{0+\sqrt{0.920304}}{0.0132}
=\frac{\sqrt{}}{0.0132}
$