Question

find the excluded value(s) of x in the rational expression f(x)= x^2+7x/ x^+14x+49so how am I supposed to combine like terms and get to the answer

Answer 1

Given

`f(x)=(x^2+7x)/(x^2+14x+49)`

Procedure

Factoring

`\begin{gathered} f(x)=(x(x+7))/((x+7)(x+7)) \\ f(x)=(x)/(x+7) \end{gathered}`

Answer:

x ≠ – 7