What is the domain and range of $f(x)=(x+2)^2-3$ ?

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Answer 1 · 2015-10-01T17:02:16

Refer to explanation

The domain is the set of all real numbers hence

$D(f)=R$

the range is

$y=f(x)=(x+2)^2-3=>y+3=(x+2)^2>=0=>y>=-3$ hence

$R(f)=[-3,+oo)$

What is the domain and range of f(x)=(x+2)^2-3f(x)=(x+2)^2-3?