Question

PLEASSE HELP THANK YOU!!!

Answer 1

-x^4-10x^3-16^x2-14

Explanation:

Answer 2

`-3x^4+3x^3+8x^2-2x-5`

Explanation:

Here we need to move the negative sign to the rest of the variables, and then only add the ones with the same power:

`(-2x^4-2x^3+8x^2+2)-(x^4-5x^3+2x+7)\\-2x^4-2x^3+8x^2+2 - x^4+5x^3-2x-7`

And then move the variables with the same power closer together

`-2x^4-x^4-2x^3+5x^3+8x^2-2x+2-7`

See how -x^4 and -2x^4 are together?

All we have to do now is combine.

`-2x^4-x^4-2x^3+5x^3+8x^2-2x+2-7\\-3x^4+3x^3+8x^2-2x-5`

So our answer is
`-3x^4+3x^3+8x^2-2x-5`