find domain and range of (x2-9)/x-3

the given function is: f(x)=x2-9x-3
since the denominator can not be zero.
x-30x3
the domain of the function is R-{3}
y=f(x)=x2-9x-3y=(x-3)(x+3)x-3y=x+3   for xR-{3}y3+3 [f(x) is not defined for x=3y6
range of the function is R-{6}

hope this helps you

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