Simplify the expression:

Question

2c2+9c2+5c2

Answer 1

To simplify the expression $2c^2+9c^2+5c^2$, you can combine the like terms (which are all $c^2$ terms):

$$2c^2+9c^2+5c^2=(2+9+5)c^2$$

Now, add the coefficients together:

$$2+9+5=16$$

So, the expression simplifies to:

$$16c^2$$

Therefore, the simplified expression is $\boxed{{\displaystyle 16c^2}}$.