joellianamikhai9403 joellianamikhai9403 21-02-2024 Mathematics contestada Solve x4 - 17x2 + 16 = 0. Let u = x2. Rewrite the equation in terms of u. a) u2 - 17u + 16 = 0 b) u2 + 17u + 16 = 0 c) u2 - 17u - 16 = 0 d) u2 + 17u - 16 = 0