Inequalities

Read the complete problem, then answer its numbered subtasks.

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Exercise 19

Book 2 · Inequalities

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Լուծել անհավասարումը.

Subtask 1

$() 5 x 32 x + <$ :

1

$(); 5 - \infty -$

2

$[5; -$ $) 0$

3

$[] 0; 1$

4

$() 1; + \infty$

Subtask 2

$x - 1 x + 12 \cdot 2$ $< 1$ :

1

$\emptyset$

2

$(); 0 - \infty$

3

$[) 0; 1$

4

$[) 1; + \infty$

Subtask 3

$() l o g x 12 - > 2$ :

1

$\emptyset$

2

$(); 1 - \infty$

3

$[] 1; 5$

4

$() 5; + \infty$

Subtask 4

$x 21 - <$ :

1

$() 1; 3$

2

$() (- \infty; 1 \cup 3;$ $) + \infty$

3

$(- 1;$ $) 1$

4

$() - \infty; 3$

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