18a*a=8

Solution for 18a*a=8 equation:

18a*a=8

We move all terms to the left:

18a*a-(8)=0

Wy multiply elements

18a^2-8=0

a = 18; b = 0; c = -8;
Δ = b2-4ac
Δ = 02-4·18·(-8)
Δ = 576
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{576}=24$
$a_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-24}{2*18}=\frac{-24}{36}
=-2/3
$
$a_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+24}{2*18}=\frac{24}{36}
=2/3
$