It is a 3rd degree polynomial
The top row contains the product of

with each term of the expressions

and bottom row contains the product of -1 with each term of expression

.
The final result will be the sum of terms of both rows as shown below:
So the correct answer is option D
Answer:
2 hrs, 24 min
Step-by-step explanation:
Sally: in one hour, she can paint 1/4 of the room.
Joe: in one our, he can paint 1/6 of the room
Hour one: 1/4+1/6=3/12+2/12=5/12
1÷5/12=1*12/5=12/5
12/5= 2 & 2/5 hours, or 2.4 hours, or 2 hrs 24 minutes
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