Question #e7f56

1 Answer
Jun 17, 2017

#f(x+2)=x^2+4x+7#

Explanation:

we have

#f(x)=x^2+3#

#f(x+2)" "#means that we replace all the #xs# in the function with #(x+2)#

so

#f(x+2)=color(red)((x+2)^2)+3#

we now multiply out and simplify

#f(x+2)=color(red)(x^2+4x+4)+3#

#f(x+2)=x^2+4x+7#

I think you may have multiplied the brackets out incorrectly.