Answer:
B [tex]\frac{b-10}{b-1}[/tex]
Step-by-step explanation:
In order to get the same denominator, we need to multiply the second fraction by (b+2) in the numerator and denominator.
We will end up in something like this :[tex]\frac{b^{2} - 2b - 8 -6(b+2) }{(b-1)(b+2)}[/tex]
I just timed the second fraction by b+ 2 and then i added them together.
Therefore, we will get [tex]\frac{b^{2} - 8b - 20}{(b-1)(b-2)}[/tex]
now factoring the numerator we will end like this
[tex]\frac{(b-10)(b+2)}{(b-1)(b+2)}[/tex]
we will then end up with the answer.
Hope this helps.
