Question

D = {x € Rx + 2<4}.​

Answer 1

Salut,

x + 2 < 4, deci x < 4 -- 2 ⇒ x < 2, adică D = (--∞, 2).

Green eyes.

Answer 2

D={x∈R | x+2<4}

x+2<4

x<4-2

x<2

x∈(-∞,2)

D=(-∞,2)