Question

find the solution set
\[9x^{-4}-145x^{-2}-16=0\]

Answer 1

still u need to overlook the question, coz answer is not real

Answer 2

what are you talking about?

Answer 3

http://www.wolframalpha.com/input/?i=9x%5E%28-4%29-145x%5E%28-2%29-16%3D0&asynchronous=false&equal=Submit

Answer 4

look it has two complex roots, as is clear from wolframalpha link

Answer 5

so

Answer 6

your point

Answer 7

it also has 2 real solutions