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Автор - pro100rusyagame

(2x+5)(2x+5)+28x<(2x+7)² Можно решение этого примера пожалуйста!!

Ответ

Автор - enotik22882

Ответ:

(от - бесконечности, до 6/5)

Объяснение:

(2x + 5) {}^{2}  + 28x < 4 {x}^{2}  + 28 + 49

4 {x}^{2}   + 20x + 25 + 28x < 4 {x}^{2}  + 28x + 49

20x + 25 < 49

20x < 24

x <  frac{6}{5}

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