ria2389 ria2389

12-04-2019
Mathematics

contestada

Plz help me with this

Plz help me with this class=

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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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