Question

Need the answer to this

Answer 1

`(2)/((x + 3))`

Explanation:

`(2x - 10)/(x^(2) - 2x - 15)`

pull 2 from top

`(2(x - 5))/(x^(2) - 2x - 15)`

we are looking to cancel (x-5) so will start with

(x - 5)(x + 3), selected (x+3) because the sign must be negative and must multiply to -15

`(2(x - 5))/((x - 5)(x + 3))`

now cancel (x-5)

`(2)/((x + 3))`