hasil dari5/x+2 -4/x-1 adalah....

(5 / x+2) - (4 / x-1)
= 5(x-1) - 4(x+2) / (x+2)(x-1)
= 5x-5-4x-8 / x²-x+2x-2
= x-13 / x²+x-2

>>> A. x-13 / x²+x-2

5x-4x-5-8=x-13
x²+2x-1x-2=x²+x-2
jadi jawabanya x-13/x²+x-2