Inequalities

Read the complete problem, then answer its numbered subtasks.

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Exercise 13

Book 2 · Inequalities

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Լուծել անհավասարումը.

Subtask 1

$3 (x + 1) \leq 5 (x - 1)$ :

1

$] (; 1 - \infty -$

2

$[1;$ $) + \infty$

3

$(; - \infty$ $] 4$

4

$[4;$ $) + \infty$

Subtask 2

$x 11 - <$ :

1

$(0;$ $) 2$

2

$() - \infty; 0$

3

$() - \infty; 2$

4

$() 1; 2$

Subtask 3

$x 3$ $1 \geq 3$ :

1

$] (- \infty; - 1$

2

$[- 1;$ $) + \infty$

3

$() - \infty; + \infty$

4

$[1;$ $) + \infty$

Subtask 4

$2 (x - 4) \leq 0 x (9 - x)$ :

1

$(0;$ $) () 44; 9 \cup$

2

$() 0; 9$

3

$() (- \infty; 0 \cup 9;$ $) + \infty$

4

$() {} (- \infty; 0 \cup 4 \cup 9;$ $) + \infty$

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