What is the inverse of f(12)=x+sqrt(x) ?

The inverse of f(12)=x+sqrt(x) is (2x+1+sqrt(4x+1))/2 ,(2x+1-sqrt(4x+1))/2

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inverse of f(12)=x+sqrt(x)

inverse

f (12) = x + x

\frac{2 x + 1 + 4 x + 1}{2}, \frac{2 x + 1 - 4 x + 1}{2}

Solution steps

y = x + x

Replace

x

with

y

x = y + y

Solve for

y, x = y + y

\frac{2 x + 1 + 4 x + 1}{2}, \frac{2 x + 1 - 4 x + 1}{2}

7 - 3 x

f (x) = (x + 8) 2

4.7

f (x) = 12.8 - 4 x

f (x) = x - 24

What is the inverse of f(12)=x+sqrt(x) ?
The inverse of f(12)=x+sqrt(x) is (2x+1+sqrt(4x+1))/2 ,(2x+1-sqrt(4x+1))/2