Question

if f(x-1) = x*x -4x +8, then f(x+1) =​

Answer 1

in this way, you need to assume the values for f(x+1)

Answer 2

Answer:

$f(x+1)=x^2+4$

Step-by-step explanation:

Given:

$f(x-1)=x^2-4x+8$

To find: f(x+1)

f(x+1) is found by replacing x by x+2 in f(x)

$f(x-1)=x^2-4x+8$

Replace x by x+2 we get

$f((x+2)-1)=(x+2)^2-4(x+2)+8$

$f(x+1)=x^2+4+4x-4x-8+8$

$f(x+1)=x^2+4$