Question

if( x+ y)^2=125xy, then2log(x+y)=​

Answer 1

(1) x^2+y^2=25xy (2) adding 2xy on both sides (3) x^2+y^2+ 2xy =27xy (4) [x+y]^2 =27xy (5) taking long on both sides (6) 2 log [x+y]=log 3^3 +log x +log y (7) 2 log [x+y] =3 log^3 +log x+log y