Simplify (3a4 – 2a2 + 5a – 10) – (2a4 + 4a2 + 5a – 2). a. a4 + 2a2 + 10a – 12 b. 5a4 + 4a3 + 3a2 + 10a – 12 c. a4 – 6a2 – 8 d. a4 + 4a2 + 10a – 12

Your answer would be C. a^4 - 6a^2 - 8. This is because if you subtract the like terms individually, you get 3a^4 - 2a^4 = 1a^4, which we can write as just a^4, and -2a^2 - 4a^2 = -6a^2, and -10 - -2 = -8.
I hope this helps!