char2426 char2426

25-08-2021
Mathematics

contestada

what is the sum of (-5a ^2 + a + 2) + ( 2a^2 - a - 9)

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Witcher3 Witcher3

26-08-2021

(-5a² + a + 2) + (2a² - a - 9) =

= -5a² + a + 2 + 2a² - a - 9 =

= -5a² + 2a² + a - a + 2 - 9 = -3a² - 7

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