6 + (9 − 1) 2 ÷ 4 ⋅ 1 over 2 whole to the power of 4

625

Step-by-step explanation:

1. parenthesis first, so it simplifies to ((6+(8)2÷4*1)/2)^4

2. pemdas says that multiplication and division go before addition and subtraction, so ((6+(8)2÷4*1)/2)^4 becomes ((6+16÷4*1)/2)^4 ---> ((6+4)/2)^4

3. then simplify inside of the parenthesis, so it becomes 5^4, which is 625

the correct is answer is a 9-sided polygon!

2.83941151 would be the answer you're looking for! : )