Diketahui f(x)=x²-12x+35, maka f-¹(x) adalah…​

y = x²-12x+35

y = x²-12x + (12/2)² – (12/2)² + 35 <= teknik kuadrat sempurna

y+6²-35 = (x-6)²

y+1 = (x-6)²

x-6 = ± √(y+1)

x = 6 ± √(y+1)

F⁻¹(x) = 6 ± √(x+1)