Answer:
5x^4−160x^2+4/2x^2
Step-by-step explanation:
5x/2 x−16+2/x^2−64
5/2x^4−80x^2+2/x^2
5x^4−160x^2+4/2xx
0.1333 or
The attached image contains the steps.
The range would only include positive integers.
Answer B
z = 6