For the answer to the question above, I'll provide a solution for my answer below. x^4 - 41x^2 = - 400 <span>=> x^4 - 41x^2 + 400 = 0 </span> <span>=> x^2 = (1/2) [41 ±√(1681 - 100)] </span> <span>=> x^2 = (1/2) (41 ± 9) </span> <span>=> x^2 = 16 or 25 </span> So, therefore, the answers for your problem are <span>=> x = ± 4 or ± 5.
