0.3x2-16=9.9

Solution for 0.3x2-16=9.9 equation:

0.3x^2-16=9.9

We move all terms to the left:

0.3x^2-16-(9.9)=0

We add all the numbers together, and all the variables

0.3x^2-25.9=0

a = 0.3; b = 0; c = -25.9;
Δ = b2-4ac
Δ = 02-4·0.3·(-25.9)
Δ = 31.08
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{31.08}}{2*0.3}=\frac{0-\sqrt{31.08}}{0.6}
=-\frac{\sqrt{}}{0.6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{31.08}}{2*0.3}=\frac{0+\sqrt{31.08}}{0.6}
=\frac{\sqrt{}}{0.6}
$