Question

1) |4-x| + 5 = 3 2) Найдите: |28|

Answer 1

Ответ:

1) ∅ (решений нет)

2) 28

Пошаговое объяснение:

|4-x|+5=3

|4-x|=3-5

|4-x|=-2

Решений нет, т.к. модуль не может быть отрицательным числом

Ответ: х∈∅

|28|=28

Answer 2

1. To solve the equation |4-x| + 5 = 3, we need to isolate the absolute value term and find the possible values of x.

Subtract 5 from both sides of the equation:

|4-x| = 3 - 5

|4-x| = -2

Absolute values are always non-negative, so the equation |4-x| = -2 has no solutions.

Thus, the original equation |4-x| + 5 = 3 has no real solutions for x.

2. The expression |28| is simply the absolute value of 28. The absolute value of a number is its distance from zero on the number line, and it is always positive or zero.

|28| = 28