$-\left(725\right)\:+\:281\:-418\:-\:\left(+92\right)\:+\:\left(-576\right)$

$9x^2-12x+3$

$7^2\cdot7^{-4}$

$f\left(x\right)=\left(\frac{1}{x}-\frac{4}{x^3}\right)\left(x^3-5x-1\right)$

$\left(a^2b^2+c^3\right)\left(a^2b^2-c^3\right)$

$e^{-\left(-3\right)}$

$\int\frac{x^2}{\left(-x^2+1\right)^{\left(\frac{3}{2}\right)}}dx$