Jawabanmu

2014-06-04T14:05:48+07:00
X1 + x2 = 2
x1x2 = -6
x2 - x1 = 2√7
PK:
x1+3 + x2-3 = 2
x1x2 + 3(x2-x1) - 9 = -6 + 6√7 - 9 = 6√7 - 15
PK baru:
x² - 2x + 6√7 - 15 = 0