Question

Urgent !!!!!
-4*|2x-1|+2=-|2x-1|-7
VA ROG!!!!!​

Answer 1

$- 4 \times |2x - 1| + 2 = - |2x - 1| - 7 = > - 4 \times |2x - 1| + |2x - 1| = - 7 - 2 = > - 3 \times |2x - 1| = - 9 = > |2x - 1| = 3 = > 2x - 1 = 3. \: \: 2x - 1 = - 3 = > x = 2. \: \: x = - 1.$

Answer 2

Răspuns:

S={-1;2}

Explicație pas cu pas:

|2x-1|=y≥0

-4y+2=-y-7|inmultim cu (-1)

4y-2=y+7

4y-y=7+2

3y=+9>0

y=3

2x-1=3.......2x=4..............x=2

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

S={-1;2}