$a^3+a^2b-ab^2+b^3;a=1;b=2$

$\left(m^2-5\right)^4$

$f\left(x\right)=\frac{x^4-4x^3-2x}{6x^2}$

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

$\log_{17}\left(-x-9\right)=\log_{17}\left(-3x+5\right)$

$\cos^2\left(x\right)-\sin\left(x\right)=\sin^2\left(x\right)$

$\lim_{x\to0}\left(\frac{\sqrt{x+4}-2}{y}\right)$