-10m2=-25000

Solution for -10m2=-25000 equation:

-10m^2=-25000

We move all terms to the left:

-10m^2-(-25000)=0

We add all the numbers together, and all the variables

-10m^2+25000=0

a = -10; b = 0; c = +25000;
Δ = b2-4ac
Δ = 02-4·(-10)·25000
Δ = 1000000
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{1000000}=1000$
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-1000}{2*-10}=\frac{-1000}{-20}
=+50
$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+1000}{2*-10}=\frac{1000}{-20}
=-50
$