Question 201684
Evaluate {{{f(k-1)}}} if {{{f(x) = 4x^2-3x-3}}}:
This is done by replacing every x in f(x) with (k-1):
{{{f(k-1) = 4(k-1)^2-3(k-1)-3}}} Simplify.
{{{f(k-1) = 4(k^2-2k+1)-3k+3-3}}}
{{{f(k-1) = 4k^2-8k+4-3k}}}
{{{highlight(f(k-1) = 4k^2-11k+4)}}}