Jawapan

  • Pengguna Brainly
2016-01-17T18:05:00+08:00
G^2(x) = g ( g(x) )
            = g ( x-1 / x+2 )
            = ( x-1 / x+2 ) - 1 / ( x-1 / x+2 ) + 2
            = ( x - 1 - x - 2 ) / ( x - 1 + 2x + 4 )
            = - 3 / ( 3x + 3 )
            = - 1 / ( x + 1 )
2 4 2