Jawabanmu

2014-01-28T09:45:14+07:00
X1/x2 + x2/x1 = (x1² + x2²) / (x2.x1) = (x1+x2)² - 2x1.x2 / (x2.x1) = 4² - 2.3 / (3) = 16-6/3 = 10/3 = 3 1/3
2014-01-28T10:23:24+07:00
X^2-4x+3= 0
x1 = 1
x2= 3

x1/x2= 1/3
x2/x1= 3

x1/x2 + x2/x1= 10/3