2 16*m ----- - 225 25
16*m^2/25 - 1*225
1*(m + 75/4)*(m - 75/4)
(1*(m + 75/4))*(m - 75/4)
(-75 + 4*m)*(75 + 4*m) ---------------------- 25
(-75 + 4*m)*(75 + 4*m)/25
2 -5625 + 16*m ------------- 25
(-5625 + 16*m^2)/25
-225.0 + 0.64*m^2