Question

Vă rog dau coroana.
Nu vreau doar răspunsul ci și rezolvarea. ​
Doar a) b) și d)

Answer 1

a)|x-2|-11=-2|x-2|+4

|x-2|+2×|x-2|=4+11

3|x-2|=15

3|x-2|:3=15:3

|x-2|=5

x-2=5

x=5+2

x=7

x-2=-5

x=-5+2

x=3

S={3,7}

b)-2|x+3|+4|x+3|=15-5|x+3|-1

2|x+3|=14-5|x+3|

2|x+3|+5|x+3|=14

7|x+3|=14

7|x+3|:7=14:7

|x+3|=2

x+3=2

x=2-3

x=-1

x+3=-2

x=-2-3

x=-5

S={-5,-1}

c)3|x+1|+5=|x+1|+11

3|x+1|-|x+1|=11-5

2|x+1|=6

2|x+1|:2=6:2

|x+1|=3

x+1=3

x=3-1

x=2

x+1=-3

x=-3-1

x=-4

S={-4,2}

d)-4|2x-1|+2=-|2x-1|-7

-4|2x-1|+|2x-1|=-7-2

-3|2x-1|=-9

-3|2x-1|:(-3)=-9:(-3)

|2x-1|=-9:(-3)

|2x-1|=9:3

|2x-1|=3

2x-1=3

2x=3+1

2x=4

x=2

2x-1=-3

2x=-3+1

2x=-2

x=-1

S={-1,2}