$\frac{1}{x}\left(4xy-x\right)$

$\left(\frac{6b^5}{8b}\right)^3$

$\sqrt{4\cdot100}-\sqrt{\left(-2+2\cdot3\right)\cdot4}-\sqrt[3]{2}\cdot\sqrt[3]{4}\cdot\left(-5\right)$

$\ln5-7x\le1$

$\frac{6}{15}x^3+\frac{43}{45}x+\frac{4}{27}$

$\frac{dy}{dx}=-y+y^2x$

$\left(-6n-7\right)^2$