Jika x +1/x=3 maka cari x^5+1/x^5.
Diketahui X+1/X =3.
Jadi (x+1/x)^2=x^2+1/x^2+2 =9, jadi x^+x^2=7.
Demikian pula, x^3+1/x^3=18
Juga,x^5+1/x^5 = (x^2+1/x^2) * (x^3+1/x^3)
=x^5+1/x^5+x+1/X= 18×7=126.
Jadi x^5+1/x^5=126-3=123.
10
Jika x +1/x=3 maka cari x^5+1/x^5.
Diketahui X+1/X =3.
Jadi (x+1/x)^2=x^2+1/x^2+2 =9, jadi x^+x^2=7.
Demikian pula, x^3+1/x^3=18
Juga,x^5+1/x^5 = (x^2+1/x^2) * (x^3+1/x^3)
=x^5+1/x^5+x+1/X= 18×7=126.
Jadi x^5+1/x^5=126-3=123.