Question

if (√x+√y) (√x-√y) √√ 16 find (x-y)​

Answer 1

Answer:

16 - y)^2 = x = (9 - sqrt(y)). Let sqrt(y) = u. Then, (16 - u^2)^2 = (9 - u).

f(u) = (u^4 - 32u^2 + u + 247) = 0. This is a forth degree polynomial equation and has 4 roots. To find the roots, Use Wolfram-Alfa software to find the roots.

x = 13.4346, 12.5299, 5.2989, 4.7366