persontoo persontoo
  • 20-07-2022
  • Mathematics
contestada

look at the picture
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look at the picture class=

Respuesta :

surjithayer surjithayer
  • 20-07-2022

Answer:

C

Step-by-step explanation:

x²-9x<-8

x²-9x+(-9/2)²<-8+(-9/2)²

(x-9/2)²<-8+81/4

(x-9/2)²<(-32+81)/4

(x-9/2)²<49/4

|x-9/2|<7/2

-7/2<x-9/2<7/2

add 9/2

9/2-7/2<x-9/2+9/2<7/2+9/2

2/2<x<16/2

1<x<8

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