Answer:
[tex]\large \boxed{\sf \ \ \ -4x^2+8x-8 \ \ \ }[/tex]
Step-by-step explanation:
Hello,
[tex](f-g)(x)=f(x)-g(x)\\\\=3x-1 - (4x^2-5x+7)\\\\=3x-1-4x^2+5x-7\\\\=-4x^2+8x-8[/tex]
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
