maleekh2o maleekh2o

20-04-2017
Mathematics

contestada

vertex for the function y= -2x^2+8x-5

Respuesta :

ghanami ghanami

22-04-2017

hello :
-2x²+8x-5 = -2(x²-4x+5/2)
= -2(x²-2(2)(x)+2²-2² +5/2)
= -2 ( (x-2)² -3/2)
-2x²+8x-5 = -2(x-2)² +3
the vertex is the point A(2,3)

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