Is this the fifth question?

In this problem, you simplify the fraction in lim and finally become

lim(- 1/((x-2)*(x-3))

Finally, x= 1 is brought into use.

The result is-1/2, choose a.

The first formula in brackets becomes: 1/((x- 1)(x-2)).

The second formula is: 2/((x- 1)(x-3))

Then divide it! Don't separate the factors of simplification! Make sure the simplification is correct!

Then the above formula can appear!