Question

Please Help I don't get this

Answer 1

The choose (D)

Explanation:

`\frac{x - 16}{ {x}^(2) + 6x - 40 } + (1)/(x + 10) \\ = (x - 16)/((x - 4)(x + 10)) + (1)/(x + 10) \\ = ((x - 16) + (x - 4))/((x + 10)(x - 4)) \\ = (2x - 20)/((x + 10)(x - 4)) \\ = \frac{2x - 20}{ {x}^(2) + 6x - 40 }`