You can put this solution on YOUR website! find the domain.
f(x)=sqrt(x+4),
SQRT OF NEGATIVE NUMBER DOES NOT EXIST.HENCE
DOMAIN OF FUNCTION ....OR...X SHOULD BE SUCH THAT
X+4>=0...THAT IS X>=-4
g(x)=x^2
HERE THERE IS NO RESTRICTION ON X VALUE FOR THE FUNCTION TO EXIST.HENCE
DOMAIN IS ALL REAL VALUES FOR X