Find the inverse of f(x)= 1+ square root (1+x)

Here is the best answer in the world x^2-2x

To find inverse
replace f(x) with y
replace all x with y and all y with x
solve for y
replace y with f⁻¹(x)

so
f(x)=1+√(1+x)
y=1+√(1+x)
x=1+√(1+y)
minus 1 both sides
x-1=√(1+y)
square both sides
x²-2x+1=1+y
minus 1 both sides
x²-2x=y
f⁻¹(x)=x²-2x

the inverse is f⁻¹(x)=x²-2x

Assuming Annually compounding

Total = Principal * (1 + rate)^years

Total = 20,600 * (1.08)^2

Total = 24,027.84

Source: https://www.1728.org/compint.htm

Step-by-step explanation: