Inequalities

Read the complete problem, then answer its numbered subtasks.

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Exercise 15

Book 2 · Inequalities

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Լուծել անհավասարումը.

Subtask 1

$25 x > x$ :

1

$() 0; 5$

2

$[) 5; + \infty$

3

$() - \infty; 0$

4

$[] 0; 5$

Subtask 2

$2 - x \leq 5$ :

1

$() 3; 2 -$

2

$] (; 2 - \infty$

3

$[) 3; - + \infty$

4

$[3; -$ $] 2$

Subtask 3

$x 12$ $1 < 8$ :

1

$(); 3 - \infty$

2

$() 3; + \infty$

3

$[) 3; + \infty$

4

$() 1; 3$

Subtask 4

$1 l o g x 21 + \leq 0, 254$ :

1

$] (; 7 - \infty -$

2

$] (8; 7 - -$

3

$[) 7; - + \infty$

4

$() 8; - + \infty$

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