3 2 2 - c + 7*c *49 - 4*b*c
-c^3 + (7*c^2)*49 - 4*b*c^2 при c = -4
-c^3 + (7*c^2)*49 - 4*b*c^2
-(-4)^3 + (7*(-4)^2)*49 - 4*b*(-4)^2
5552 - 64*b
3 2 2 - c + 343*c - 4*b*c
-c^3 + 343.0*c^2 - 4.0*b*c^2
2 c *(343 - c - 4*b)
2 -c *(-343 + c + 4*b)