Let's simplify step-by-step.
3a4−2a2+5a−10−(2a4+4a2+5a−2)
Distribute the Negative Sign:
=3a4−2a2+5a−10+−1(2a4+4a2+5a−2)
=3a4+−2a2+5a+−10+−1(2a4)+−1(4a2)+−1(5a)+(−1)(−2)
=3a4+−2a2+5a+−10+−2a4+−4a2+−5a+2
Combine Like Terms:
=3a4+−2a2+5a+−10+−2a4+−4a2+−5a+2
=(3a4+−2a4)+(−2a2+−4a2)+(5a+−5a)+(−10+2)
=a4+−6a2+−8
Answer:
=a4−6a2−8