Помогите решить прошуууу...

lilialilia2810 @lilialilia2810

July 2022 1 2 Report

Помогите решить прошуууу

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nafanya2014

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10.

$\left \{ {{2-x> 0} \atop {x+1>0}} \right.$ $\left \{ {{-x> -2} \atop {x>-1}} \right.$ $\left \{ {{x-1}} \right.$ $x \in (-1;2)$

О т в е т. 2)

11.

$|12+\frac{5x}{2}|\leq 3x+ \frac{3}{4}$

$-3x- \frac{3}{4}\leq12+\frac{5x}{2}\leq 3x+ \frac{3}{4}$

$\left \{ {{12+\frac{5x}{2}\leq 3x+ \frac{3}{4}} \atop { 12+\frac{5x}{2}\geq-3x- \frac{3}{4}}} \right.$ $\left \{ {{\frac{5x}{2}-3x\leq \frac{3}{4} -12}\atop { \frac{5x}{2}+3x\geq- \frac{3}{4}-12}} \right.$ $\left \{ {{-\frac{x}{2}\leq- \frac{45}{4}}\atop { \frac{11x}{2}\geq- \frac{51}{4}}} \right.$ $\left \{ {x\geq \frac{45}{2}}\atop { x\geq- \frac{51}{22}}} \right.$ ⇒ $x\geq \frac{45}{2}$

О т в е т. 1) [22,5;+∞)

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