# How do you simplify #f( x ) = \frac { x + 9} { x ^ { 2} + 9x }#?

##### 2 Answers

Dec 7, 2017

#### Explanation:

The denominator can be factorised into

Now,

Dec 7, 2017

#### Explanation:

#"factorise the denominator and cancel common factor"#

#f(x)=cancel((x+9))/(xcancel((x+9))#

#color(white)(f(x))=1/xto(x!=0)#