f(x) = x + x
= 2x
Since there are no restrictions on "x", then the domain is ALL REAL NUMBERS
(-∞, ∞)
g(x) = x + 8x + 2
= 9x + 2
Since there are no restrictions on "x", then the domain is ALL REAL NUMBERS
(-∞, ∞)
Answers: domain f(x) = (-∞, ∞), domain g(x) = (-∞, ∞)
