Question

P(c;d) = (2c^2+3c^2d+d) - ( 5c^4+3c^2d)

Answer 1

(2c^2+3c^2d+d )- (5c^4+3c^3d) = 5c^4-2c^2-d^

Answer 2

It seems you have provided an equation:

P(c;d) = (2c^2 + 3c^2d + d) - (5c^4 + 3c^2d)

This equation appears to involve two variables, 'c' and 'd'. If you have specific values for 'c' and 'd' or if you have a specific question or task related to this equation, please let me know so that I can provide you with more information or help you with the problem.