Determine the Domain and the Range of the Function $$f ( x ) = x ^ { 2 } + 2 x$$

Multiple Choice

Determine the domain and the range of the function.
- $$f ( x ) = x ^ { 2 } + 2 x$$

A) domain: {x|x ≥ 1}
B) domain: {x|x ≥ -1} range: {y|y ≥ 1} range: {y|y ≥ -1}
C) domain: all real numbers
D) domain: all real numbers range: {y|y ≥ -1} range: {y|y ≥ 1}