Hi,

f(x) = 3x + 2 and g(x) = 7x + 6 

 f*g = (3x+2)(7x+6) =  21x^2 + 32x + 12  |Yes, domain is all real numbers



 f(x) = 3x - 6 and g(x) = x - 2

 f/g = (3x-6)/(x-2)    |Domain is all real numbers, except x = 2

      CANNOT divide by zero 

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