Question

The one-to-one function f is defined below.
h(x) = x^2-x-42/x^2-25

Answer 1

`((x - 7)(x + 6))/((x + 5)(x - 5))`

Explanation:

`1. \: \frac{(x - 7)(x + 6)}{x {}^(2) - 25 } \\ 2. \: \frac{(x - 7)(x + 6)}{x {}^(2) - 5 {}^(2)} \\ 3. \: ((x - 7)(x + 6))/((x + 5)(x - 5))`