Respuesta :

Answer:

(5x)^-5.

Step-by-step explanation:

(5x)^3 * (25x^2)^2 * (5x)^-12

= (5x)^3 * (5x)^4 + (5x)^-12

= (5x)^(3+4-12)

= (5x)^-5.

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