Автор - naidanovandrey666

12+(5x + 3x²)-(3x² - -2x)=0. crozno pomogite​

Ответ

Автор - Seyitmyradova78

Объяснение:

12+(5x + 3x²)-(3x² - (-2x)=0.

12+ 5x + 3x^2 - 3x^2 - 2x=0

3x = - 12

x = -12 :3

x = - 4

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