I got 4 more problems I need help with

First Problem

Given f(x)=Sqrt2x+2 . Find f(13) Your answer should be simplfied and written in radical notation

assuming it is sqrt(2x+2) the result would be sqrt(28)=2*sqrt(7)

or is it sqrt(2x)+2?

its the top one, Sqrt(2x+2)

But im totally lost with this lesson lol, and im ready to get it over with

The answer starts out f(x)=blank

This post was edited by SyML1nK on Nov 3 2013 10:00pm

you have difficulty with english?

as said in my previous post: f(13)=sqrt(2*13+2)=sqrt(26+2)=sqrt28)=sqrt(4)*sqrt(7)=2*sqrt(7)

ps: you could say -2*sqrt(7) as well but with sqrt(7) resulting in +-2.65... can leave the sign off for now

This post was edited by brmv on Nov 3 2013 10:07pm

Apparently so cause i didnt understand at first but I got it

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