Question

If f(x) = (x + 1)2, then f(t + 2) =

Answer 1

please help

Answer 2

but their result is t2 + 6t + 9

Answer 3

ok I can understand now

Answer 4

thanks

Answer 5

f(x)=(x+1)^2
Then: f(t+2)=(t+2+1)^2
f(t+2)=(t+3)^2
f(t+2)=(t+3)(t+3)
f(t+2)=t^2+6t+9