245m^2-405=0

Solution for 245m^2-405=0 equation:

245m^2-405=0

a = 245; b = 0; c = -405;
Δ = b2-4ac
Δ = 02-4·245·(-405)
Δ = 396900
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{396900}=630$
$m_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-630}{2*245}=\frac{-630}{490}
=-1+2/7
$
$m_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+630}{2*245}=\frac{630}{490}
=1+2/7
$