tentukan f(x) jika f(x-3)=x^2+2x-5

f(x-3)=(x-3)(x-3) + 2(x-3) - 5
= x²-6x+9 + 2x-6 -5
= x²-4x -2

f (x -3) = x^2 +2x - 5
f (x - 3) = (x -3)^2 + 8x - 14
f (x - 3) = (x - 3)^2 + 8(x - 3) + 10
f ( x ) = x^2 + 8x + 10