Question 1040504
Divide both equation

Sqrt x+6/x-8
Replace x with -2

4/-10 = -2/5= - .4

Domain: the denominator can't be zero
Sqrt of a number can't be negative which means under the sqrt can't be negative

X-8=8 therefor x can't be eight since 8 can make the denominator as zero

Sqrt x+ 6 has to be greater than zero. X+6= 0 therefore x can be -6 or any number greater than 6 except 8