$y=\left(\frac{4}{x}+1\right)\left(x^2-2x+3\right)$

$\left(x^3\right)^{2n-1}$

$15x^4-21xy^2+25x^3y^2-35y^4$

$\frac{d}{dx}\:xy^{\frac{1}{2}}-2x=y^{\frac{1}{2}}$

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

$\left(\frac{m^x}{m^y}\right)^2.\left(\frac{m^y}{m^2}\right)^z.\left(\frac{m^z}{m^x}\right)^y$

$-18x^2-6x+12yb\left(x\right)$