x-1/x^2-x-20 give the equivalent numerator if the denominator is (x-5)(x+4)(x+3)

Answer:
Step-by-step explanation:
First, factor the denominator: (x-5)(x+4)
Since the denominator already has the two values, you only need to multiply it by (x+3), which means you need to multiply the numerator by (x+3):
(x-1)(x+3)/(x-5)(x+4)(x+3)
(x-1)(x+3) then simplifies to [tex]x^2+2x-3[/tex]