What is the difference of 2/x-4 - 7x-28/(x-4)2?

Choices are:
-5x/x-4, x ≠ −4
36-5x/(x+4)(x-4), x ≠ −4, 4
24-5x/(x-4)2, x ≠ 4
-5/x-4, x ≠ 4

Question

What is the difference of 2/x-4 - 7x-28/(x-4)2?

Choices are: 
-5x/x-4, x ≠ −4
36-5x/(x+4)(x-4), x ≠ −4, 4
24-5x/(x-4)2, x ≠ 4
-5/x-4, x ≠ 4

anonymous · Answer

Is the 3rd answer correct?

phi · Answer

$$ \frac{2}{x-4} - \frac{7x-28}{(x-4)^2} $$

phi · Answer

my first thought is factor a 7 from the top of the 2nd fraction.  can you do that ?

anonymous · Answer

not sure

phi · Answer

if you have
7( x - 4)   and "distribute the 7" what do you get ?

anonymous · Answer

Ok I don't think the 2nd or 3rd answers are correct.

anonymous · Answer

Is it the 4th answer

phi · Answer

Sorry, I don't like guessing the answer.   If you can't distribute the 7 in 
7( x - 4) 
the say so.  If you don't want to learn, please say so.

anonymous · Answer

No I want to learn I just keep confusing myself

anonymous · Answer

Can anyone please tell me if the 4th answer is correct?

jhonyy9 · Answer

so if you have factorized out the 7 what will get there in numerator ?

jhonyy9 · Answer

and if there is in numerator the same term with inside denominator what can you makeing with this ?

anonymous · Answer

Thank you