Question

Math Help ASAP!
What is the sum or difference of 2x^4-8x^4?
A. -6x^8
B. -6x^4
C. -16x^4
D. -16x^8
Thanks in advance!

Answer 1

since both numbers ahave x^4 just subtract 8 from 2

2 - 8 = -6
 so answer is -6x^4

Answer is B

Answer 2

The answer is D hope this helps