Answer:
-80x²
Step-by-step explanation:
When you expand the binomial, you should get:
[tex]x^5-10x^4+40x^3-80x^2+80x-32[/tex]
To find the 4th term, you must put the expression in standard form (which it is already) and find the 4th by counting left to right. Once you do so you should see your answer as -80x².
