0.4*2+16.3=f(2)

Solution for 0.4*2+16.3=f(2) equation:

0.4*2+16.3=f(2)

We move all terms to the left:

0.4*2+16.3-(f(2))=0

determiningTheFunctionDomain
-f2+16.3+0.4*2=0

We add all the numbers together, and all the variables

-1f^2+17.1=0

a = -1; b = 0; c = +17.1;
Δ = b2-4ac
Δ = 02-4·(-1)·17.1
Δ = 68.4
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$f_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$f_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$f_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{68.4}}{2*-1}=\frac{0-\sqrt{68.4}}{-2}
=-\frac{\sqrt{}}{-2}
$
$f_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{68.4}}{2*-1}=\frac{0+\sqrt{68.4}}{-2}
=\frac{\sqrt{}}{-2}
$