Jawabanmu

2014-06-05T04:34:45+07:00
3x² - x + 2 = 0
a + b = 1/3
ab = 2/3
Nilai a/b + b/a
= (a² + b²)/ab
= ((a + b)² - 2ab)/ab
= (1/9 - 4/3) / 2/3
= -11/9 / 2/3
= -11/9 . 3/2
= -11/6