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Could you please check my answers and help me with one?

Find the domain of the function.

-I got the domain being (negative infinity, postive infinity).

g(x)= 3x/x^2 -49 (This one I don't understand how to find the domain)

  • Algebra -

    yes on domain
    I assume the second is g(x)=3x/(x^2-49)
    can x be +-7 ?

  • Algebra -

    I try to figure out it, and since x^2-7 is a perfect square (x+7)(x-7), I thought x couldn't be +-7?

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