Answer:
none of the above
should be: 8x^4 -x^2
Step-by-step explanation:
In the problem statement given here, when like terms are combined, the x terms cancel. None of the answer choices shows that.
x + 8x^4 – x^2 – x
= 8x^4 -x^2 +(x -x)
= 8x^4 -x^2
_____
<em>Comment on the question</em>
Based on the answer choices, it looks like there are typos, possibly in the given polynomial, and probably the answer choices as well. Choices A, C, and D are identical as shown here.