Question 38531
ok... {{{ f(x) = x^2 - 1 }}} and  {{{ g(x) = 3x+5 }}}


so {{{ fg(x) = f(3x+5) }}} and hence we get
{{{ fg(x) = (3x+5)^2 - 1 }}} which is an answer. What you can do is expand the bracket and simplify. But the question doesn't ask you to simplify :-)


jon.