diketahui g(x)=x-1 dan (fog)(x)=2x²-4x-5 maka f(2x-1) adalah

g(x) = x - 1
f o g (x) = 2x^2 -4x -5
f { g(x) } = 2x^2 -4x -5
f (x - 1) = 2x^2 -4x -5
f (x -1 ) = 2(x - 1)^2 - 7
f (x) = 2x^2 -7
f (2x -1) = 2(2x -1)^2 -7
f (2x - 1) = 2( 4x^2 -4x + 1) -7
f (2x - 1) = 8x^2 -8x +2 -7
f (2x -1) = 8x^2 -8x -5