panirsiva364 panirsiva364
  • 25-12-2019
  • Mathematics
contestada

(3c - d)² + d(5c - d)​

Respuesta :

Yang100
Yang100 Yang100
  • 25-12-2019

Answer:

9c^2-cd

Step-by-step explanation:

(3c-d)^2+d(5c-d)

(3c-d)(3c-d)+5cd-d^2

9c^2-3cd-3cd+d^2+5cd-d^2

9c^2-6cd+5cd

9c^2-cd

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