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