Question

2x^4-8x^4
Answers:
-6x^8
-6x^4
-16x^4
-16x^8

Answer 1

-6
`x^(4)`

Explanation:

Put aside the 4's for a minute.

Then you have 2x-8x, which equals -6x.

Then add the 4 back in. You never add that part of a number.

Finally, you have -6
`x^(4)`.

Hope you learned something!

Answer 2

the answer is -16x^4