You probably are interested in expressing the given equation as a quadratic equation in u, as it will make it easy to find the solutions.
Let u = x²
So,
u² = x⁴
So, the given equation can be written as:
u² - 17u + 16 = 0
Now the equation is quadratic in u and the solutions can be calculated using quadratic formula or factorization.
16-gon = 2,520 deg
2,520 divided by 16 = 157.5
157.5 deg
The answer is 1 computer/8 students
