bradenducharme4 bradenducharme4

26-04-2020
Mathematics

contestada

Please help these are not easy for me

Please help these are not easy for me class=

Respuesta :

hopethishelps hopethishelps

26-04-2020

Answer:

12a^2 - 9a + 5

Step-by-step explanation:

(5a^2 - 6a - 4) - (-7a^2 + 3a - 9)

5a^2 + 7a^2 = 12a^2

-6a - 3a = -9a

-4 + 9 = 5

12a^2 - 9a + 5

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