s(2)=12-0.25(2)

Solution for s(2)=12-0.25(2) equation:

s(2)=12-0.25(2)

We move all terms to the left:

s(2)-(12-0.25(2))=0

We add all the numbers together, and all the variables

s2-(11.748)=0

We add all the numbers together, and all the variables

s^2-11.748=0

a = 1; b = 0; c = -11.748;
Δ = b2-4ac
Δ = 02-4·1·(-11.748)
Δ = 46.992
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$s_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$s_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$s_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-\sqrt{46.992}}{2*1}=\frac{0-\sqrt{46.992}}{2}
=-\frac{\sqrt{}}{2}
$
$s_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+\sqrt{46.992}}{2*1}=\frac{0+\sqrt{46.992}}{2}
=\frac{\sqrt{}}{2}
$