Question

Combine like terms: -2x4+16+2x4+9-3x5 PLEASE HELP!!!! ASAP!!!

Answer 1

See below.

Explanation:

`-2x^4+16+2x^4+9-3x^5`

A helpful thing to do is to rearrange them in descending order:

`=-3x^5-2x^4+2x^4+16+9`

We can see that the second and third term cancel. The fourth and fifth term are able to be added:

`-3x^5+25`

Note: If you're confused on why
`-2x^4+2x^4` cancel, use the distributive property:

`-2x^4+2x^4=x^4(-2+2)=x^4(0)=0`

Answer 2

16 - 3x5

Explanation:

In the expression -2x4+16+2x4+9-3x5

-2x4 will eliminate +2x4 so we have 16 - 3x5 these two are not like terms so we can't add or subtract them