Question

Plz answer the question. question 12 and 14 plz request.​

Answer 1

Answer:

5^(1+x) + 5^(1-x) = 26

=> put x = 1

=> 5² + 5^0 = 25+ 1 = 26

3^x + 3^-x - 2 =0

=> put x = 0

=> 3^0 + 3^0 - 2

=> 1+1-2

=> 0