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Question 185290: find the domain of each of these and show how you got it. h(x)=3x^2+5-3
m(x)=5/x^2-9 1(x)=5x-4 g(x)=7x+4/x+4
Answer by vleith(2983)   (Show Source):
You can put this solution on YOUR website! h(x)=3x^2+5-3 domain is all X, since no value of x results in an invalid h(x)
m(x)=5/x^2-9 domain is all X except 3 and -3, since those two values of x results in a denominator that is 0. Which is not allowed
l(x)=5x-4 domain is all X, since no value of x results in an invalid l(x)
g(x)=7x+4/x+4 domain is all X except 4, since that value of x results in a denominator that is 0. Which is not allowed
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