Use the$$ four$-$step process to find

f prime left parenthesis x right parenthesisf$($x$)$

and then find

f prime left parenthesis $1$ right parenthesisf$(1),$

f prime left parenthesis $2$ right parenthesisf$(2),$

and

f prime left parenthesis $3$ right parenthesisf$(3).$

$$f$($x$)$equals$=$negative x squared plus $6$ x minus $7$