Zapisz w jak najprostszej postaci:

a) - x-4 (1-x)

b) 3 (5x-2) - 5 (3-4x)

c) √2 (3-x) - 2 (1-x√2)

Step-by-step explanation:

a) - x-4 (1-x) =

- 2 x - 4 (1 - x).

2 x - 4

b) 3 (5x-2) - 5 (3-4x) =

3 ⋅ (5 x - 2) - 5 ⋅ (5 - 4 x)

35 x - 31

c) √2 (3-x) - 2 (1-x√2) =

√ 2 x ⋅ (3 - x) - 2 ⋅ (1 - x √ 2).

2 x √ 2 + 3 √ 2 x - √ 2 x x - 2