Question

log base 2 (x+2) + log base 2 (x-2) =5

Answer 1

Log base 2 (x+2) + log base 2 (x-2) =5

Log (x+2) + log (x-2) = 5 ==> Log (x+2)(x-2) = 5
     2                 2                          2

(x+2)(x-2) = 2^5 ==> x^2 - 4 = 32 

x^2 = 32+4 ==> x^2 = 36 ==> x = +/-6                       V = { + 6}