What is the inverse of f(x)=-x^2-8x+7 ?

The inverse of f(x)=-x^2-8x+7 is -4-sqrt(-x+23),-4+sqrt(-x+23)

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inverse of f(x)=-x^2-8x+7

inverse

f (x) = - x^{2} - 8 x + 7

- 4 - - x + 23, - 4 + - x + 23

Solution steps

y = - x^{2} - 8 x + 7

Replace

x

with

y

x = - y^{2} - 8 y + 7

Solve for

y, x = - y^{2} - 8 y + 7

- 4 - - x + 23, - 4 + - x + 23

f (x) = 0.98

f (x) = - 2 (x - 4)^{2} + 1

tan (\frac{6}{7})

f (x) = 19 x + 4

arctan (0)

What is the inverse of f(x)=-x^2-8x+7 ?
The inverse of f(x)=-x^2-8x+7 is -4-sqrt(-x+23),-4+sqrt(-x+23)