+0  
 
+1
131
3
avatar+56 

A function is defined as \(f(x)=x^2-3x+4\). What expression can be used to describe \(f(2x)\)? Express your answer in simplified form in terms of x.

 

So far, I know that my expression that can be used to describe \(f(2x)\) is \(f(2x)=2x^2-6x+4\).

How do I "express my answer in simplified form in terms of x"?

 

Thank you.

 Apr 5, 2021
 #1
avatar+594 
0

$2x^2-6x+4$ is "in simplified form in terms of $x$".

 

You're done already!!!!

 Apr 5, 2021
 #2
avatar+32402 
+4

If \(f(x) = x^2-3x+4\)  then \(f(2x)=(2x)^2-3(2x)+4\)  which, when simplified is \(4x^2-6x+4\)

 Apr 5, 2021
 #3
avatar+56 
0

oh wait thank you so much. i totally forgot about the parentheses and didn't distribute the square to the 2 also.

shananigans  Apr 6, 2021

6 Online Users

avatar