25x=0.0015x^2

Solution for 25x=0.0015x^2 equation:

25x=0.0015x^2

We move all terms to the left:

25x-(0.0015x^2)=0

We get rid of parentheses

-0.0015x^2+25x=0

a = -0.0015; b = 25; c = 0;
Δ = b2-4ac
Δ = 252-4·(-0.0015)·0
Δ = 625
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{625}=25$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(25)-25}{2*-0.0015}=\frac{-50}{-0.003}
=16666+0.0020000000000024/0.003
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(25)+25}{2*-0.0015}=\frac{0}{-0.003}
=0
$