Question

let f(x)=2x^2+x-3

f(t+3)
f(m+2)-f(m)

need help with this :(. I have a hard time solving this.

Answer 1

\[ \large f(x)=2x^2+x-3\]

simply replace \(\large x\) by \(\large t+3\) to get \(\large f(t+3)\)

Answer 2

my answer on the f(t+3) is 2t^2+13t+18 should I simplify it??

Answer 3

You could probably factor it out, but it's really up to how they want to answer the question. I'd leave it like that.