Question

If c(x)=4x-2 and d(x)=x^2+5 what is (c•d)(x)?

Answer 1

Answer:
`4x^3-2x^2+20x-10`

Explanation:

(c·d)(x) means c(x)*d(x). The little circle filled in means to multiply c and d. If it was an open circle, then it would mean c(d(x)). Since the problem you stated was a closed circle, we would multiply c and d.

`(4x-2)(x^2+5)=4x^3+20x-2x^2-10`

This answer is technically correct, but it is always better to put them in order.

`4x^3-2x^2+20x-10`

If this is not what the problem is asking for, meaning it was looking for (cod)(x), then let me know. I will be happy to help!