Diketahui f(x) =x²-2x+1.tentukan nilai f(-1)​

f(x) = x² – 2x + 1

f(-1) = (-1)² – 2(-1) + 1

f(-1) = (-1 × -1) – (-2) + 1

f(-1) = 1 + 2 + 1

f(-1) = 3 + 1

f(-1) = 4