2 m - 16*m + 64
m^2 - 16*m + 64 при m = 3/2
m^2 - 16*m + 64
(3/2)^2 - 16*(3/2) + 64
(3/2)^2 - 16*3/2 + 64
169/4
64.0 + m^2 - 16.0*m
64 + m*(-16 + m)
2 (-8 + m)