Question

(9-4√5)^2 +(9+4√5)^2​

Answer 1

Answer: 810.

Explanation:

$(9-4\sqrt{5} )^{2} +(9+4\sqrt{5})^{2} \\(81-16*5)+(81+16*5) \\(65*5)+(97*5)\\(325)+(485)\\810$