Simplify the following expression:
$\frac{4x^6}{8x^3}$
$2x^3$
$\frac{1}{2}x^3$
$\frac{1}{2}x^2$
$2x^2$
Find the domain of the function:
$f(x)=\frac{x^2-1}{x-1}$
All real numbers except for –2
All real numbers
All real numbers except for 1
0