Express x−1(x−2)(x−3)\displaystyle \frac{x-1}{(x-2)(x-3)}(x−2)(x−3)x−1 in the form A(x−2)+B(x−3)\displaystyle \frac{A}{(x-2)} + \frac{B}{(x-3)}(x−2)A+(x−3)B