Question

can u tell me q no 14

Answer 1

a-b=0
a=b
(2^x-1)/(2^x-2) = (2^-x)/(2^x+1)
(2^x-1)*(2^x+1) = (2^-x)*(2^x-2)
2^x-1+x+1 = 2^-x+x-2
2^2x = 2^-2
2x=-2
x=-1