.30x2=18.50

Solution for .30x2=18.50 equation:

.30x^2=18.50

We move all terms to the left:

.30x^2-(18.50)=0

We add all the numbers together, and all the variables

.30x^2-(18.5)=0

We add all the numbers together, and all the variables

.30x^2-18.5=0

a = .30; b = 0; c = -18.5;
Δ = b2-4ac
Δ = 02-4·.30·(-18.5)
Δ = 22.2
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{22.2}}{2*.30}=\frac{0-\sqrt{22.2}}{0.6}
=-\frac{\sqrt{}}{0.6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{22.2}}{2*.30}=\frac{0+\sqrt{22.2}}{0.6}
=\frac{\sqrt{}}{0.6}
$