2 b + 10*b + 25
b^2 + 10*b + 25 при b = -3/2
b^2 + 10*b + 25
(-3/2)^2 + 10*(-3/2) + 25
(-3/2)^2 + 10*(-3)/2 + 25
49/4
25.0 + b^2 + 10.0*b
25 + b*(10 + b)
2 (5 + b)