Question Number 10133 by konen last updated on 26/Jan/17

((1+2^(x−y) )/(1+2^(y−x) ))=4⇒x−y=?

Answered by ridwan balatif last updated on 26/Jan/17

((1+2^(x−y) )/(1+2^(−(x−y)) ))=4 ((1+2^(x−y) )/(1+(1/2^(x−y) )))=4 (((1+2^(x−y) )/(2^(x−y) +1)))×2^(x−y) =4 2^(x−y) =4 2^(x−y) =2^2 x−y=2