1/(x+3)-(x-2)/(x^2-5x+6) calculation

simple form
=1 of (x + 3) - (X-2) (x-3) (X-2)
=(x + 3) 1 - (x-3) 1
=[(x + 3) (x-3)] of [(x-3) - (x + 3)]
=(X & # 178; - 9) (- 6)
=-(X & # 178; - 9) 6 / 6