Jawabanmu

2014-03-23T18:10:41+07:00
Ttk puncak kurva itu (- b/2a, - D/4a)....a=1 b= -2 c= -5....D=b^2-4ac=(-2)^2-4*1*(-5)=4+20=24.... (- (-2)/2, - 24/4)....(1,-6)