What is the simplified form of the following expression?

6c2 + 2.5d – d + 2c2 – 3d

The simplified form of the expression 6c2 + 2.5d – d + 2c2 – 3d is:

8c2 - 1.5d

To simplify the given expression, combine like terms:

Start by combining the terms with the same variables:
6c^2 + 2c^2 = 8c^2

Now, combine the terms with the same variable "d":
2.5d - d - 3d = -1.5d

Putting both the simplified parts together, the simplified form of the expression is:
8c^2 - 1.5d