Question

Estou precisando mt de ajuda....​

Answer 1

a)(x ∈ R/-4 ≤ x < 8)

b)(x ∈ R/-7 ≤ x ≤ ∞)

c)(x ∈ R/0 ≤ x < 18)

d)(x ∈ R/∞ ≤ x <4)