Question

Someone pls explain and help me with this

Answer 1

It is just a very simple substitution operation...

let x= 2

so the function f(x) would be:


`f(2) =4(2)^2-2(2)+1=4(4)-4+1=16-4+1=13`


That is for the first one


and so on for the other two



can you follow this and do the other two??




`f(5)=4(5)^2-4(5)+1=4*25-20+1=81`

`f(4)=4(4)^2-4(4)+1=4*16-16+1=49`

f(5)-f(4)=81-49=32