Question

If ƒ(x ) = x^2 + 1, find ƒ(a + 1).

a^2 + 2
a^2+a+1
a^2+2a+2

Answer 1

If ƒ(x ) = x^2 + 1, find ƒ(a + 1).

x=(a+1) so u replace x to get this:

f(a+1) = (a+1)^2+1

If you square "a" it just becomes a^2 and "1" squared is just "1"

1+1=2

Answer: a^2+2a+2

Answer 2

I'm pretty sure that this is how it goes

If ƒ(x ) = x^2 + 1, find ƒ(a + 1).

x=(a+1) so u replace x to get this:

f(a+1) = (a+1)^2+1

If you square "a" it just becomes a^2 and "1" squared is just "1"

1+1=2

Answer: a^2+2a+2