Jawabanmu

2014-06-17T19:17:12+07:00
3x²+6x+15=0 didapat a = 3 , b = 6 dan c = 15
p+q=-b/a = -6/3 = -2
pq = c/a = 15/3 = 3
p²+q²+4pq = (p²+2pq+q²) + 2pq
                 = (p + q)² + 2pq
                 = (-2)² + 2(3)
                 = 4 + 6
                 = 10
maaf pq = 15/3 = 5, jadi isinya (-2)^2 + 2(5) = 4 + 10 = 14 OPTION A yang betul