The expression

StartFraction f left parenthesis x plus h right parenthesis minus f left parenthesis x right parenthesis Over h EndFraction

for

hnot equals$0$

is called the difference quotient. Find and simplify the difference quotient for the following function.

$$f$($x$)$equalsnegative $9$xsquaredplus$5$xplus$8$

Question content area bottom

Part $1$

The difference quotient is

enter your response here.

$($Simplify your$$ answer.$)$