Решите уравнение 1) |2x-5|=0 2)|2-3x|=0 3) |3x+1|+2в кубе=8

Question

Решите уравнение 1) |2x-5|=0 2)|2-3x|=0 3) |3x+1|+2в кубе=8

Answer 1

1) | 2x - 5 | =0
2x - 5 =0
2x = 5
x = 5 ÷ 2
x = 2,5
2) | 2 - 3x | = 0
2 - 3x = 0
3x = 2
x = 2 ÷ 3
x =2/3
3) | 3x + 1 | + 2 в кубе = 8
| 3x + 1 | + 8 = 8
| 3x + 1 | = 0
3x + 1 = 0
3x = -1
x = - 1/3