$\frac{3}{4}a^2b-\frac{2}{3}ab^2-a^2b-3ab^2+\frac{1}{2}ab^2$

$\left(4x^3-1\right)\cdot\left(4x^3+1\right)$

$\left(\:3x^2\:-\:11\right)\left(\:9x^4\:+\:33x^2\:+\:12\right)$

$5\left(-3\right)^2-6$

$\log\left(x\right)+\log\left(x-3\right)=\log\left(40\right)$

$\int36xe^{6x}dx$

$-3x-5\le4-x$