Respuesta :

Answer:

3(3r - 4)(3r + 4)

Step-by-step explanation:

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This is the correct solution:

27r^2 - 48                   Divide through by 3:

= 3(9r^2 - 16)               9r^2- 16 is the difference of 2 squares so:

= 3(3r - 4)(3r + 4)

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