You did not provide directions. What do you want us to do with your 8th degree polynomial?
Answer:
-9/20
(Decimal: -0.45)
Step-by-step explanation: 1/2 -1/4
-2/5
= 1/-5 -1/4
=-1/5- 1/4
= -1/5 +-1/4
= -9/20