Question

Repedeee! Va rog! Dau coroană,si 66 puncte​

Answer 1

Răspuns:

a) A={-12, -6, -4, -3, -2, -1, 1, 2, 3, 4, 6, 12}

b) B={0, 1, 2, 3, 6, 9, 18}

c) -3 < x - 1 < 3 |+1

-2 < x < 4

x € (-2, 4)

x={-1, 0, 1, 2, 3}

d) x € (-18, 2]-{numerele impare}

x={-16,-14,-12,-10,-8,-6,-4,-2, 0, 2}

e) -19 < 2x - 1 < 19 |+1

-18 < 2x < 20 |:2

-9 < x < 10

x € (-9, 10)-{-8, -7, -5, -4, -2, 2, 4, 5, 7, 8}

x={-6,-3, 0, 3, 6, 9}

f) x + 2 # 0 => x # (-2)

x = {11}

Answer 2

Răspuns:

Explicație pas cu pas:

A = {-1; 1; -2; 2; -3; 3; -4; 4; -6; 6; -12; 12}

___________

B = {0; 1, 2, 3, 6. 18}

____________

-3 < x - 1 < 3

-2 < x < 4

C = {-1; 0; 1; 2; 3}

____________

D = {-16; -14; -12; -10; -8; -6; -4; -2; 0; 2}

___________

-19 < 2x - 1 < 19

-18 < 2x < 20

-9 < x < 10

E = {-6; -3; 0; 3; 6; 9}

___________

x + 2 = 1 ⇒ x = -1

x + 2 = 13 ⇒ x = 11

F = {11}