You factor the numerator and denominator and cancel the common factors. So maybe that should help you
Answer:
f(x)=x^2+1 -> f(a+1)=(a+1)^2+1=a^2+2a+1+1=a^2+2a+2
Step-by-step explanation:
A
Answer: B
Step-by-step explanation: hopes this helps, have a nice day
