Kordinat titik balik fungsi f(x)=(-2x+6(x-5) adalah

Simetri = -b/2a
= -6/2(-2)
= -6/-4
=3/2
Puncak = -D/4a
= -(b^2-4ac)/4a
= -(-6^2-4(-2)(-5)/4(-2)
= -(36-40)/-8
= 4/-8
= -1/2
Jadi Titik baliknya {(3/2,-1/2)}