<p>^
I checked all off the answer choices and none of them is working! Can somebody confirm this?</p>
<hr>
<p>I also found this on SparkNotes, which is also not correct:</p>
<p>The expression simplifies further:</p>
<p>4x(x^2-2+1) = 4x(x-1)^2</p>
<p>enlighten me, again! </p>
<p>but I am pretty sure that 4x(x^2-1) and 4x(x-1)^2 are two different equations!</p>
<p>P.S. Is SparkNotes notorious for making such careless errors? :(</p>