f`(x)=(x^2–3x +2)`
f`(x)=(x^2)`–3*(x)` +(2)`
f`(x)=2x–3*(1) +(0)
f`(x)=2x–3
[b]x_(o)=0[/b]
f(x_(o))=0^2–3*0 +2
f(x_(o))=[red]2[/red]
f`(x_(o))=2*0-3
f`(x_(o))=[blue]-3[/blue]
y-[red]2[/red]=[blue]-3[/blue]*(x-[b]0[/b])
[b]y=-3x+2[/b]