Answers

2016-07-20T10:17:21+08:00
-x^2-12x+1+7-x -x^2-13x+8 a(x-h)^2 +k , vertex (h , k) f(x)= (x^2 -13x)+8 = (x^2-13x+26/4)+8-169/4 = (x-13/2)^2 +(-153/2) Vertex (13/2 , -153/2) Ang hirap e type nito. Hehe
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haha..ang hirap intindihin..pero thanks..