edconsys edconsys
  • 12-01-2019
  • Mathematics
contestada

solve for x: 9^(x-8) = 3^(4x-12)

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Аноним Аноним
  • 12-01-2019

Answer:

x = -2.

Step-by-step explanation:

9^(x - 8) = 3^(4x - 12)

9 = 3^2 so we can write:-

3^2(x - 8) = 3^(4x - 12)

Since the base 3,  is the same:-

2(x - 8) = 4x - 12

2x - 16 = 4x - 12

2x - 4x = -12 + 16

-2x = 4

x = -2


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