2 (b + c) - b*(b - 2*c)
(b + c)^2 - b*(b - 2*c)
/ c\ 1*|b + -|*(c + 0) \ 4/
(1*(b + c/4))*(c + 0)
c*(c + 4*b)
(b + c)^2 - b*(b - 2.0*c)
2 (b + c) + b*(-b + 2*c)
(b + c)^2 + b*(-b + 2*c)
2 2 (b + c) - b + 2*b*c
(b + c)^2 - b^2 + 2*b*c
2 c + 4*b*c
c^2 + 4*b*c