Question

NA TERAZ ŁADNIE PROSZĘ WAS

Answer 1

ODPOWIEDŹ:

T,

T,

N,

T,

N.

Answer 2

Odpowiedź:

- 2x + 4(x + 2) = 8

- 2x + 4x + 8 = 8

2x = 8 - 8 =0

x = 0 T

4x = 3x

4x - 3x = 0

x = 0 T

2(x + 3) - x = 4x

2x + 6 - x = 4x

x + 6 = 4x

x - 4x = - 6

- 3x = - 6

3x = 6

x = 6/2 = 3 N

2x - 9 = 2(x - 3) - 3

2x - 9 = 2x - 6 - 3

2x - 9 = 2x - 9

2x - 2x = - 9 + 9

0 = 0

Równanie tożsamościowe ; x ∈ R więc 0 jest rozwiązaniem równania T

(5x - 3)/14 = 1/2

2(5x - 3) = 14

10x - 6 = 14

10x = 14 + 6 = 20

x = 20/10 = 2 N