Question

4,va rog,e urgent
dau coroană​

Answer 1

Răspuns:

a) -4;

b) 2;

c) -5;

d) 2;

e) 2;

f) 1/2

Explicație pas cu pas:

a) 2x+8≥0

2x≥0-8

2x≥-8

x≥ -8/2

x ≥ -4

b)-2x+4<0

-2x < 0-4

-2x < -4 |• (-1)

2x < 4

x < 4/2

x < 2

c) -8x-40≤0

-8x ≤ 0+40

-8x ≤ 40 |• (-1)

8x ≤ -40

x ≤ -40/8

x ≤ -5

d)-2x+3>3

-2x > 3-3

-2x > 0 |• (-1)

2x > 0

x > 2

e) 3x-7≤-x+1

3x+x≤1+7

4x ≤ 8

x ≤ 8/4

x ≤ 2

f) -2x+1≥ -3x-x

-2x +3x +x ≥ 1

2x ≥ 1

x ≥ 1/2.

sper că te-am ajutat