Respuesta :

Answer:

Step-by-step explanation:

-1/6(x²-26x-2x+52)

=-1/6(x²-28x+196-196+52)

=-1/6(x²-28x+196-144)

=-1/6(x-14)²+1/6 ×144

=-1/6(x-14)²+24

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