Jawabanmu

2014-08-31T15:18:28+07:00
A=3, b=-1 c=-10
pq=ac=-30 => -6.5= -30
p+q=b=1 => -6+5=-1
jadi p= -6 dan q=5
a(x+p/a) (x+q/a)
3(x+ (-6/3)) (x+5/3)
(x-3) (x+5)