Question

Ba rog ex 4 repedeeeee

Answer 1

Răspuns:

Explicație pas cu pas:

2x + 8 ≥ 0

2x ≥ - 8

x ≥ -8: 2

x ≥ -4

x = -4; -3; -2 ,....

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-2x + 4 < 0

2x > 4

x > 4 : 2

x > 2

x = 3; 4; 5; ....

_________________

-8x - 40 ≤ 0

8x ≥ 40

x ≥ 40 : 8

x ≥ 5

x = 5; 6; 7;....

________________

-2x + 3 > 3

2x < 3 - 3

2x < 0

x < 0

x = -1; -2; -3; .....

_________________

3x - 7 ≤ -x + 1

3x + x ≤ 1 + 7

4x ≤ 8

x ≤ 8 : 4

x ≤ 2

x = 2; 1; 0; -1; -2; ....

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-2x + 1 ≥ -3x - x

-2x + 1 ≥ - 4x

4x - 2x ≥ -1

2x ≥ -1

x ≥ -1/2

x = 0; 1; 2; ....