$\frac { x } { \frac { x } { x } }$

$\int\frac{x^5}{\left(x^3-1\right)}dx$

$-0.25+1.00$

$\lim_{x\to0}\left(\frac{2sin\left(-0.01\right)}{\left(-0.01\right)}\right)$

$\left(7a^4-b^3-cd^5\right)\left(7a^4+b^3+cd^5\right)$

$\frac{28}{4}$

$\int\frac{3x^3-x+4}{4x^2-4}dx$