$2\left(x+h\right)^3+3\left(x+h\right)^2-4\left(x+h\right)-2x^3-3x^2+4x$

$x^6y^4-1$

$\left(\left(\frac{6}{1}\right)x\left(\frac{4}{4}\right)y-\left(\frac{4}{10}\right)\left(\frac{6}{1}\right)x+\left(\frac{4}{4}\right)y-\left(\frac{4}{10}\right)\right)$

$\left[cosec\:\theta\:\:+\:\left(sec\theta\:\right)^{\left(\left[2\:\right]\:\right)}\right]\:=\:\left[\left(cosec\:\theta\:\right)^{\left(2\right)}\:+\:sec\theta\:\right]$

$-6xy^2-xy^2-3xy^2-10xy^2$

$\sqrt[4]{x^3}\sqrt[3]{x^2}\sqrt{x}$

$-\frac{5}{2}+\frac{4}{3}\left(2a\right)$