ria2389
ria2389 ria2389
  • 12-04-2019
  • Mathematics
contestada

Plz help me with this

Plz help me with this class=

Respuesta :

tramserran
tramserran tramserran
  • 14-04-2019

Answer:   a) 125x³ - 64y³

Step-by-step explanation:

  (25x² + 20xy + 16y²)(5x - 4y)

= (5x - 4y)(25x² + 20xy + 16y²)

= 5x(25x² + 20xy + 16y²)   -4y(25x² + 20xy + 16y²)

= 125x³ + 100x²y +80xy²

+           -100x²y   -80xy² - 64y³

= 125x³                           -64y³

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