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Let f(x) = -20x2 + 14x + 12 and g(x) =5x-6 Find f/g and state its domain a. 5x - 6; all real numbers except x =6/5 b. 5x - 6; all real numbers c. –4x – 2; all real numbers except x =6/5 d. –4x – 2; all real numbers

Respuesta :

altavistard
In this problem the domain is determined by the denominator alone.  The denom. must NOT be zero.  Thus, set the denom. 5x + 6 = 0 and solve for x.  This x will be the only value that x may not have.  Find the domain of this 5x + 6; your result will also be the domain of the entire given function f/g.