starlillyenrick1012 starlillyenrick1012

15-10-2021
Mathematics

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(3x+6)^2 subtracted from 9

Respuesta :

jimrgrant1 jimrgrant1

15-10-2021

Answer:

- 9x² - 36x - 27

Step-by-step explanation:

9 - (3x + 6)² ← expand using FOIL

= 9 - (9x² + 36x + 36) ← distribute parenthesis by - 1

= 9 - 9x² - 36x - 36

= - 9x² - 36x - 27

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