Answer :
Answer:
x=4 and x=7 when f(x)=31
Step-by-step explanation:
[tex]f(x)=x^2-3x+3[/tex]
[tex]31=x^2-3x+3[/tex]
[tex]0=x^2-3x-28[/tex]
[tex]0=(x-7)(x+4)[/tex]
[tex]x=7[/tex] and [tex]x=4[/tex]
Therefore, the values for x such that f(x)=31 are 4 and 7.