Пошаговое объяснение:
а)
4|х| = 20
|х| = 20 : 4
|х| = 5
х1 = -5
х2 = 5
b)
4|х| + 5|х| - 3 = 2|х| + 11
9|х| - 3 = 2|х| + 11
9|х| - 2|х| = 11 + 3
7|х| = 14
|х| = 14 : 7
|х| = 2
х1 = -2
х2 = 2
с)
4 + 3|2х - 5| = 10
3|2х - 5| = 10 - 4
3|2х - 5| = 6
|2х - 5| = 6 : 3
|2х - 5| = 2
1)
2х - 5 = -2
2х = -2 + 5
2х = 3
х = 3 : 2
х1 = 1,5
2)
2х - 5 = 2
2х = 2 + 5
2х = 7
х = 7 : 2
х2 = 3,5
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Пошаговое объяснение:
а)
4|х| = 20
|х| = 20 : 4
|х| = 5
х1 = -5
х2 = 5
b)
4|х| + 5|х| - 3 = 2|х| + 11
9|х| - 3 = 2|х| + 11
9|х| - 2|х| = 11 + 3
7|х| = 14
|х| = 14 : 7
|х| = 2
х1 = -2
х2 = 2
с)
4 + 3|2х - 5| = 10
3|2х - 5| = 10 - 4
3|2х - 5| = 6
|2х - 5| = 6 : 3
|2х - 5| = 2
1)
2х - 5 = -2
2х = -2 + 5
2х = 3
х = 3 : 2
х1 = 1,5
2)
2х - 5 = 2
2х = 2 + 5
2х = 7
х = 7 : 2
х2 = 3,5