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Answer on Calculus Question for Freddy

Question #5585
find the domain of the function f(x)= x
x^2 - 9
Expert's answer
all real number without -3 and 3. Why? our function is rational function so its
domain is all real numbers without zeros of denominator—é so we must find zeros
of x^2-9 so x^2-9=0 so x^2=9 so x=3,x=-3.

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