$\left(x^2+5x^2-7x^2\right)+\left(-2x+4x-3x\right)$

$4x\left(y-z\right)-15x\left(y-z\right)+6\left(y-z\right)$

$27-48x^4$

$\int\left(7x-1\right)^2x^3dx$

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

$\frac{2}{5}x-3\ge2x+8$

$4\cdot\frac{p^{11}}{8\cdot p^6}$