Question

VA ROG FRUMOS (POZA) dau 48 p.​

Answer 1

a)

2(-x + 1) = - 6

- 2x + 2 = -6

2 + 6 = 2x

2x = 8

x = 4

R : 3) 4

b)

|2x - 6| = 0

2x - 6 = 0

2x = 6

x = 3

R : 1)3

c)

3/(- 4 + 1) = 3/3 = 1 ∈ Z

3/(2 + 1) = 3/3 = 1 ∈ Z

3/(0 + 1) = 3/1 = 3 ∈ Z

3/(-2 + 1) = - 3/1 = -3 ∈ Z

S = -4 + 2 + (-2) = - 4

R : 2) - 4

d)

3ˣ = 2017ˣ

x = 3

3⁰ = 1 = 2017⁰

R : 4) 0