Jawabanmu

2014-08-24T16:56:03+07:00
X+1/x=3
x+1=3x
1=3x-x
1=2x
x=1/2=0,5
maka,
x²+1/x²= (0,5)²+1/(0,5)²
           = 0,25+1/0,25= 5
1 5 1