Complete the tasks to subtract the polynomials vertically. (1.3t3 0.4t2 â€"" 24t) â€"" (0.6t2 8 â€"" 18t) what is the additive inverse of the polynomial being subtracted? â€""0.6t2 (â€""8) (â€""18t) â€""0.6t2 (â€""8) 18t â€""0.6t2 8 â€"" 18t 0.6t2 (â€""8) 18t