Question

If f(t)= 3t^2-2, find f(k-2)

Answer 1

By plugging (k-2) in t, we can write that

`f(k-2)=3(k-2)^(2)-2=3(k^(2)-4k+4)-2=3 k^(2)-12k+12-2=`
`3 k^(2)-12k+10`