Answer:
the second one is your answer
Step-by-step explanation:
hope this helped mark me brainlest pls and thank you
Answer:

Step-by-step explanation:

Answer:
86.9
Step-by-step explanation:
18x^5-3x^4+x^3-x^2-72x^3+12x^2-4x+4, and then you will combine like terms to be :
18x^5-3x^4-71x^3+11x^2-4x+4