Question 834754
{{{f(x)=x^2 - 2x + 1}}}


{{{f(g+1)=(g+1)^2 - 2(g+1) + 1}}} Replace EVERY copy of x with g+1


{{{f(g+1)=(g+1)(g+1) - 2(g+1) + 1}}}


{{{f(g+1)=g(g+1)+1(g+1) - 2(g+1) + 1}}}


{{{f(g+1)=g^2+g+g+1 - 2g-2 + 1}}}


{{{f(g+1)=g^2}}} <font color="red"><--- Final Answer</font>