Question

|5-|2x-1|=8
||2x-11|-7|=10
||2x+7|-13|=12​
va rog am mare nevoie

Answer 1

Răspuns:

5-|2x-1|=8

-|2x-1|=8-5=3

|2x-1|=-3 x=mulțimea vidă

Explicație pas cu pas:

|2x-11|-7=10

|2x-11|=10+7=17

|2x-11|=17 2x-11=17 2x=17+11=28/:2 x=14

2x-11=-17 2x=-17+11 2x=-6 /:2 x=-3

x={-3,14}

|2X+7|-13=12 |2X+7|=12+13=25 |2X+7|=-+25

2X+7=25 /-7 2X=18/:2 X=9

2X+7=-25 /-7 2X=-25-7=-32/2 X=-16

X={-16,9}