Jawabanmu

2014-09-13T20:50:08+07:00
2/x^2 - 3/2x - x/7 (kali 14x^2)
= 28 - 21X - X^3
.
2x + [ 1/x(x+2) - 3/(x+2)(x-1) ]
= 2x + [ (-2x-1)/(x^3+x^2-2x) ]
= (2x^4 + 2x^3 -4x^2- 2x - 1 )/(x^3+x^2-2x)