$-7b+-5+-5\left(-8+-8b\right)$

$\int\frac{3x^4+5x^2+5}{3x^2+5}dx$

$65\:-\:\left(-30\right)\:+\:\left(-45\right)\:-\:\left(-5\right)\:+\:40\:-\:10$

$-1200xy+900y^2+400^2$

$a^{\frac{1}{2}}\cdot b^{\frac{2}{3}}\cdot b^{\frac{1}{4}}\cdot a^{\frac{2}{5}}$

$\sqrt[2]{zx^3}$

$\left(x-4\right)^2>x\left(x+12\right)$