# Math Help - continous

1. ## continous

For what value of the constant c is the function f continuous on (-, )?

I'm just sitting here with a face like this --->

Do I need to factor something? Or rationalize?

2. For f to be continuous it needs to not have any jumps in it. Especially at x=2.

So you want to find c so that $c (2^2) + 2 \times 2 = 2^3 - c \times 2$ (by sticking x=2 into both the parts of that equation and making them equal).

3. nice, that’s really cleary explained Matt +1 rep from me