Inequalities

Read the complete problem, then answer its numbered subtasks.

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Exercise 3

Book 2 · Inequalities

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Լուծել անհավասարումը.

Subtask 1

$2 x$ $\leq - 4 x$ :

1

$] (- \infty; - 4$

2

$[0; 4]$

3

$[] - 4; 0$

4

$(; 4] [0;) - \infty - \cup + \infty$

Subtask 2

$12 - 5 x \geq 2 x - 2$ :

1

$] (; 2 - \infty$

2

$(; - \infty$ $) 2$

3

$(1;$ $) 2$

4

$[] 1; 2$

Subtask 3

$x 9$ $x \geq 13$ :

1

$\emptyset$

2

$[0;$ $) + \infty$

3

$(0;$ $) + \infty$

4

$] (; 0 - \infty$

Subtask 4

$() l o g 20 - 2 x \geq l o g 3163$ :

1

$] (0; 8$

2

$[8;$ $) + \infty$

3

$(; 10) - \infty$

4

$] (- \infty; 8$

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